Aidan was originally a pet form of the Irish name Aodh (pronounced 'ee'), the name of the old Celtic god of the sun and fire. The name was borne by numerous early Irish saints, one of whom was noted for his kindness and generosity. 
 
Aidan is an appealing Irish saint's name meaning fire that zoomed up the popularity lists, jumping four hundred places in a decade to a peak of 39 in 2013 before slumping down. Though it has been overtaken by variant spelling Aiden, the original Aidan is worth considering before selecting one of its offshoots: Caden, Brayden, et al.
 
Aidan was first introduced into the mainstream American consciousness by actor Aidan Quinn, and was given a definite bounce by the appealing Aidan on Sex and the City. Aidan has many variations, among them, Aiden, Aden, Adan, Aedan, and Ayden.

Aidan

Irish Aileen and Scottish Eileen may be pronounced the same way or Aileen can be pronounced with a long a at the beginning. While neither is particularly stylish, Aileen is slightly more popular and has reversed its downward slide to inch upward in the past few years, perhaps thanks to its stylish A beginning. Nicknames for Aileen include Isla, Ayla, Lee and Lena.

Aileen

While theoretically unisex, this surname name has been edging up the <a href="https://nameberry.com/girls-names">girls’ names</a> list, perhaps originally as an Ashley substitute. 

One quality in Ainsley's favor: It's remained steadily popular -- but not TOO popular -- for more than 20 years now, ranking consistently around Number 400. That makes it stylish and familiar without showing up everywhere.

Ainsley

Allen is the spelling of this name -- other common spellings are Alan and Allan -- most associated with the surname; it might also be the most appropriate if you're trying to steer clear of Al as a nickname, as this can easily offer you Len or Lenny as options.

Allen

Arran Island (not to be confused with the Aran Islands in Ireland) is a large island in Scotland's Firth (or bay) of Clyde. Attractive name, long popular in Scotland, but elsewhere would be forever be mixed up with Aaron.

Arran

In the USA, Blair is gaining momentum, rising quickly for the last 10 years and likely to continue to climb. In England and Wales, where Blair has political connotations – calling to mind former prime minister Tony Blair – it is much less common, although it is in use for boys in its native Scotland.

 Blair has a chic and tailored feel in line with other trending gender-neutral one-syllable girl names like Sloane, Quinn, Sage, and Reese. A notable pop culture namesake in recent years is Leighton Meester's upper-crusty character in Gossip Girls.

 Blair was first popularized as a girl's name in the 80s, cracking the Top 500 for a few years before falling off again. Blair re-entered the charts in 2011 and has been rising since. Blair has a longer history as a boy's name, with consistent use as early as the 1800s, and the name stayed on the charts until the mid 90s.

Blair

Caitrìona

Callum, a charming Scottish name high on the list in England, Scotland and Northern Ireland, is rising through the ranks in the US now too. And it comes complete with the easy nickname Cal. Kyle MacLachlan chose Callum for his son. Callum might also be spelled Calum; in Ireland, the name became Colm, and in Scotland it's sometimes used as a pet form of Malcolm.
 
Callum was derived from Latin Columba, a unisex given name meaning "dove." Callum was popular among early Christians because the dove was a symbol of purity, peace and the Holy Spirit. St. Columba was one of the most influential of the early Celtic saints.

Callum

With its friendly, sensitive, and approachable feel, Cameron is a 90’s favorite that remains popular today. It has a pleasing balance of soft and strong sounds, and holds unisex appeal, thanks to Cameron Diaz. Still, ten times more boys than girls are named Cameron in the US. 
Derived from a Scottish surname which in turn comes from the name of a West Highland Clan, Cameron means “crooked nose” in Gaelic. 
Not the best of meanings, perhaps, but it is likely to have originated from a nickname given to an 8th century member of the clan. Such nicknames were common in Highland culture, and it lends the name a rugged, outdoorsy feel. 
Used sporadically in the early half of the 20th century, Cameron became a popular choice in Scotland from the 50’s onwards. Shortly afterward, it began to accelerate up the US charts, really taking off in the 90’s, and peaking at #31 in the year 2000. 
Its popularity spread to Australia, England and Wales, Canada, and to France too, where it remained a top choice into the early 2010’s. Since then, it has been on a mostly downwards trajectory, though it is still given to 5000 boys – and 600 girls – in the US every year. 
Many will associate it with Cameron Frye, the anxious, slightly awkward, but good-hearted best friend in the movie Ferris Bueller’s Day Off. Actress Cameron Diaz is another memorable namesake, whose fame popularized Cameron as an option for girls too. 
A favorite in the sporting world, the name is worn by American footballer Cameron Jerell Newton, tennis player Cameron Norrie, and Olympic swimmer Cameron McEvoy, just to list a few. 
These sporty associations help to give Cameron an energetic vibe to complements its soft and calmer sounds, giving it a more “all-rounder” feel. 
Enjoy Cameron, but feeling put off by its meaning or popularity? You could try Camden, Caspian, Callum, Callahan, Cormack, or Cambell instead.

Cameron

Carson is one of the most long-running popular <a href="https://nameberry.com/unisex-names">androgynous baby names</a>, with a dash of the Wild West via the legendary Missouri frontiersman Kit Carson. Dating back to when it was the name of Nancy Drew's Dad, Carson is still steadily in the Top 200 <a href="https://nameberry.com">baby names</a>.
Current Carsons include TV personalities Carson Daly and Carson Kressley, and Pro Bowl quarterback Carson Palmer. Carson Wells was the bounty hunter character played by Woody Harrelson in No Country for Old Men, and Carson is the name chosen by actress Kathryn Erbe for her son.
 Although its best known namesake is writer Carson McCullers, Carson has not caught on as a <a href="https://nameberry.com/girls-names">girl's name</a>.

Carson

Catrina

Thanks to its dashing Anglo-Irish image — due partly to Colins Firth and Farrell — and its C-initialed two-syllable sound, Colin and its cousin Collin have enjoyed a long run of popularity, reaching as high as Number 84 in 2004. 
 The usual pronunciation of Colin is COLL-in, but the alternate COLE-in version was publicized by General Colin Powell, the first U.S. African-American Secretary of State, who was named after World War II hero Colin Kelly.
 Literary cred: Colin Craven is a character in The Secret Garden, and Colin Creevey appears in the Harry Potter books.
 Both Kevin James and Kiss's Paul Stanley have young sons named Colin, while Tom Hanks has a grown one.

Colin

Daividh

Effie is the old-fashioned short form for Euphemia. It shares a vintage charm with Hattie and Letty although is much rarer than either. Effie is a character in The Hunger Games and Sisterhood of the Traveling Pants.

Effie

Pretty and soulful name of a goddess from Irish mythology and several Irish saints. Singer Enya, born Eithne Ní Bhraonáin, has made the Anglicized spelling familiar. Eithne comes from the vocabulary word "kernel", which was used as a term of praise in old bardic poetry.

Eithne

Elspeth is one of those names that never quite made it out of the British Isles--particularly Scotland, but possesses a winningly childlike charm. Elspeth was used by Sir Walter Scott for several of his female characters.
 Elspeth Huxley was a prolific Kenyan-born U.K. writer, best known for the autobiographical The Flame Trees of Thika--she was connected by marriage to the illustrous Huxley family.
 A close cousin is Elsbeth, as in the recurring character Elsbeth Tascioni on The Good Wife. Embeth is a more distant relation.

Elspeth

More unusual than Fiona and more user-friendly than Fionnuala, the engaging Scottish Fenella, has been scarcely heard in this country.
 Fenella first became known outside of Ireland when Sir Walter Scott used it for the character Finella Christian in his novel Peveril of the Peak.
 Finola is another underused Anglicization of Fionnuala.

Fenella

This was a 100 percent <a href="https://nameberry.com/boys-names">boys’ name</a> until celebs Jason Sehorn and Angie Harmon bestowed it on their daughter, recently followed by Lisa Marie Presley, who used it for one of her (female) twins. Finlay is also now among the most <a href="https://nameberry.com/unisex-names">popular unisex names</a>. 
At the most recent count, Finley was given 57 percent of the time to girls and 43 percent to boys, close enough to make it one of the truly gender neutral names.

Finley

Fiona entered the American consciousness with the opening of the 1954 Broadway musical Brigadoon, but didn't come onto the U.S. popularity list until 1990.
 
Fiona is the best known of a group of related Gaelic names, which is ironic because it's the only one without genuine traditional roots — it was found first in James Macpherson's Ossianic poems and then popularized in the late nineteenth century as a feminine pseudonym for William Sharp, a Scottish male writer. <a href="https://twitter.com/HJosephineGiles/status/1555216419721297922">Some researchers believe</a> that Fiona Macleod was Sharp's identity as a trans woman.
 
Its recent spike in popularity owes much to singer Fiona Apple and also possibly to Princess Fiona in Shrek. In fact, there have been numerous Fionas on the big and small screens, from The Thorn Birds to Josie and the Pussycats, Four Weddings and a Funeral to Nurse Jackie to Shameless.
 
Jennie Garth and Chad Lowe have daughters named Fiona. It's also Julia Roberts' middle name.
 
If you're looking for something more authentic, consider Fionnuala.

Fiona

Gavin, a name with Scottish roots, has stepped into the spotlight, replacing the dated Kevin, thanks in part to pop-rock sensation Gavin DeGraw and Bush lead singer Gavin Rossdale. 
 Gavin also has made literary appearances in J.M. Barrie's The Little Minister and in William Faulkner's Snopes family trilogy. In the form Gawain, he was one of the Knights of King Arthur's Round Table.
 Gavin entered the ranks in the 1950's and climbed as high as Number 30, in 2008, before dropping a bit on the charts.

Gavin

Honoring a male relative. Be bold and go with Glenn. 

Glenna

Two prominent literary namesakes make Gregor a somewhat risky choice. On the highbrow side, there's Gregor Samsa, the Kafka character who woke up one day to find himself turned into a cockroach. And then there's Gregor Clegane, one of the most feared and purely evil characters in the world of Game of Thrones. It's a shame, because this earlier form of Gregory, quite common in Scotland, would otherwise make an attractive choice.

Gregor

Ian is Scottish form of John, derived from the Hebrew name Yohanan. It is an Anglicization of the Scottish Gaelic Iain, which is also a viable spelling. Ian was introduced to Americans by Ian Fleming, creator of James Bond.
 
Ian was rather late making inroads on our shores—it was already the seventh most popular name in England in 1975. It’s been on a steady path in the Top 100 ever since the introduction of James Bond, thanks to its jaunty charm. Today, Ian flies in formation with fellow classic British RAF pilot names, like Derek and Miles and Colin, all now certified U.S. citizens, packing considerable punch and panache into its three short letters. So though it may not be the newest name on the block, it's still a recommended choice. 
 
Notable namesakes include actor Ian McKellan and novelist Ian McEwan. Actor Ian Ziering pronounces his name EYE-an, rather than the traditional EE-an.

Isla is a hit name throughout the English-speaking world but hasn't found the same popularity in other western countries, perhaps because its spelling and pronunciation don't make sense for those whose native language is not English. Think island without the final two letters.

Adding to the confusion, the name is a twin of the Spanish word for island, which is pronounced EES-la. Isla is part of a trend for simple, old-fashioned <a href="https://nameberry.com/girls-names">girls’ names</a> that start and end with a vowel: Ava, Ada, Ella, Emma, Eva, Ida, Ivy. 
 
Red-haired actress Isla Fisher, married to Sacha Baron Cohen, propelled the name to stardom. Isla Black Hitchens is a Harry Potter character; Queen Elizabeth has a great-granddaughter named Isla Elizabeth Phillips. 
Some other similar names that are not as trendy as Isla: Islay and Ailsa.

Isla

The Scottish spelling of Isabel has a definite character of her own, the 'o' giving her an extra infusion of strength but also an element of confusion. How do you pronounce that? Answer: Exactly like Isabel or Isabelle.
 Isobels have appeared on several high-profile TV shows: Isobel Crawley is Matthew's mother on Downton Abbey, Isobel Fleming is a Vampire Diaries character, and Isobel Stevens was known as Izzie on Grey's Anatomy.

Isobel

Jamie is typical of the relaxed <a href="https://nameberry.com/search/unisex-names/j">unisex names starting with J</a> that seemed so cool in the sixties after decades of Jeans and Joans, though now pretty tepid. Jaime and even Jamey and Jayme are alternate spellings.

Jamie

Jessie has never been used as much as Jennie/Jenny, partly because it's a <a href="https://nameberry.com/boys-names">boys’ name</a> as well (spelled Jesse), but it does have a friendly and unpretentious pioneer feel. In Scotland, it's found as an Anglicized form of Teasagh, itself a form of Jean, and is used as a full name. And in the rest of the world, Jessie may be short for Jessica or used on its own.
 Jessie Redmon Fauset was a novelist known for her involvement in the Harlem Renaissance.

Jessie

Strong but gentle, Keith is one of the Scottish surnames that, along with Douglas, Craig and Bruce, were considered the epitome of cool in the 1960s and early 1970s, when it was a Top 40 choice.
 Keith made his debut in the nineteenth century and was borne by a long line of Scottish nobles. In the recent past he's been represented by musicians Keith Richards, Keith Moon, Keith Jarrett and Keith Urban, as well as actor Keith Carradine, TV guy Keith Olbermann, artist Keith Haring and baseball star Keith Hernandez.

Keith

Kenna is the Scottish version of Kendra, both of which are feminine versions of Kenneth. Used in the TV show Reign for one of the supporting characters.

Kenna

When actress Deborah Kerr entered the scene, there was a great debate over her name's pronunciation. Car or Ker. Your choice. 

Kerr

Kirsty

In the early eighties, Lindsay, in tandem with Courtney, approached the Top 10. 
Lindsey is one of the few truly unisex names (rather than being a name that has changed genders). Over time the ey ending was usually reserved for women and the ay ending reserved for men. This tradition continues in the 2014 Top 1000 rankings, with Lindsey retaining a considerable lead over Lindsay among girls in the USA.
In the UK, however, Lindsey makes no appearance in the Top 3000 at all, and Lindsay was only given to 6 girls in 2013, ranking at Number 2443.

Lindsay

Logan, with its appealing Scottish burr, is a very hot boys' name—it's in the national Top 10 and heading for Number 1 in some states—and can also make a rich and resonant choice for a girl. Jason and Jordan Mewes have a daughter named Logan Lee.

Logan

One of those names like Pamela, Vanessa and Wendy, Lorna was invented for a particular literary character--the protagonist of the 1869 novel Lorna Doone by R. D. Blackmore--and then perpetuated as the name of a shortbread cookie. 
The author claimed to have based it on the Scottish place-name, Lorn. In baby name limbo for quite some time, it was chosen by Judy Garland for her younger daughter, Lorna Luft. Lorna Simpson is an important contemporary American artist. 
While not strictly from Scotland, many consider Lorna to be one of the most tradtional <a href="https://nameberry.com/list/472/scottish-names-for-girls">Scottish names for girls</a>

Lorna

Maisie, a charming name long popular as a nickname for Margaret or Mary, entered the Top 1000 as itself ten years ago and continues to rise. Game of Thrones star Maisie Williams helped propel the name back into the limelight, along with the that of her character, Arya.

In literature, Maisie is the name of the precocious young title character in the Henry James novel What Maisie Knew, and is also the main female character in Rudyard Kipling's The Light That Failed. And to bring things up to date, Maisie is a half-blood character in the Harry Potter series. Spelled Maisy, it's a popular children's book series.
 When Maisie re-entered the US Top 1000 in 2014 at 658, it was one of the fastest rising names of that year. She's still got a ways to go In the US to catch up to other English-speaking countries, where Maisie ranks in the Top 100.

Maisie

Malcolm is a warm and welcoming Scottish appellation (originally Mael-Colium) that fits into that golden circle of names that are distinctive but not at all odd. A royal name in Scotland, Malcolm is also a hero name for many via radical civil rights activist Malcolm X. 
 Malcolm was the name of four Scottish kings — including the son of Duncan who succeeded to the throne after Macbeth murdered his father — and has been a standard in that country.
 Denzel Washington named one of his sons Malcolm, as did Harrison Ford.
 Actor Malcolm McDowell is one current bearer. Other namesakes are writer Lowry; bestselling author and trendspotter Gladwell; Sex Pistols musician McLaren; and actor Jamal Warner. There have also been several Malcolms on TV — e.g., in Malcolm in the Middle, Firefly and in the Outlander series. There were no fewer than three characters named Malcolm in the Harry Potter books.

Malcolm

Malina is a synthetic-feeling name that may be a feminization of the Scottish Malcolm or a spelling twist on the Greek Melina and that also has a fruit meaning in several Eastern European languages.  For all that it's a little bit of lots of things, Malina doesn't feel very much like itself.

Malina

An invention of the eighteenth-century romantic poet James Macpherson, in his epic cycle about Ossian, a legendary Celtic hero. In Poland, where it was popular at the start of the 20th century, the spelling is Malwina, and it's also had some use in other Eastern European countries.

 Fun fact: the Spanish name for the Faulkland Islands is Las Malvinas, but this derives from the French port town of St Malo, rather than from Gaelic.

Malvina

Marcas

Well-established Irish and Scottish name that has never really caught on across the pond. Remembered by an older generation as the beautiful red-haired ballerina in the film The Red Shoes, Moira Shearer.

Moira

Màiri

Mìcheal

Always the top spelling of the name; Neil peaked in the 1950s, but then enjoyed a second coming following the fame of such Neils as astronaut Armstrong and singers Sedaka, Diamond, and Young. Now semiretired. 

Neil

Peadar

Pàdraig

The aristocratic--if not haughty--Roderick was nevertheless consistently in the Top 1000, reaching as high as Number 221 in 1967, when it was not uncommon to run into a Rod or a Roddy. It's at a low point right now, but we can envision it being revived as a neglected, dignified grandpa name, perhaps when Rod is no longer a potentially embarrassing nickname..
 Roderick has lots of literary history, including the novels Roderick Random by Tobias Smollett and Roderick Hudson by Henry James, and Roderick Usher is the main character in the Edgar Allan Poe short story "The Fall of the House of Usher." Roderick, of course, is the full name of Rod Stewart, and TV personality Rosie Pope called her son James Roderick.
 <br/We have to admit that the Spanish version, Rodrigo, has a lot more verve, as does the Irish Rory.

Roderick

Ranulf

Saundra

A cool, windswept, surfer babe-magnet in 1965, a nice dad -- or even granddad -- today. 

Scott

A sweet, slightly old-school nickname name with a cheerful image.

Scottie

Animated Gaelic name popularized by singer Sheena Easton, also brings to mind Sheena, Queen of the Jungle, the Amazonian comic book and TV series heroine. Sine is considered to be and English equivalent of Jane or Jean. 

Sheena

A popular Irish name virtually unknown here, but one that feels like it could follow in the footsteps of Siobhan and Saoirse. It's pronounced SOR-ka, but with a little hiccup between the 'r' and the 'c' that's difficult for non-Gaelic speakers to reproduce. Spelled (and pronounced) Sorsha, she is a major character in the movie Willow.

Sorcha

Steafan

frauleinawesome's list "Awesome Scottish Names" of 54 great name ideas: Abi - Steafan!