It may have peaked at #1 for girls in 1991 and 1992 in the US, but Ashley actually has a long history as a male given name, as evidenced by the sensitive Ashley Wilkes in Gone With the Wind. It's always been more popular for boys in England and Wales, where it currently ranks at #414.

Ashley

Once a popular choice in for boys in the Middle Ages and again during the 19th century, Aubrey has mostly been used for girls in the US since the 1970's. With its arty, surname-y, and sophisticated feel, however, it is rising up the UK charts for both boys and girls. 
Derived from the Auberi, an Old French variant of Alberich, Aubrey means "elf ruler". Up until the 50's, it was relatively well known for boys in the US, but with the release of the song "Aubrey" by Bread in 1972, the scales tipped. 
Despite this, there are still memorable male bearers of the name, including rapper Drake, whose full name is Aubrey Drake Graham; the 19th century illustrator Aubrey Beardsley; and the central character of John Polidori's novel The Vampyre. 
Used on only a tiny handful of boys each year in the US, in the UK, Aubrey is currently in the Top 250 for girls, but also the Top 600 for boys. This means it is given to boys 5 times more often in the UK, than it is the US. 
Gentle, cool and handsome, Aubrey fits in with the recent interest in softer boys names and in surnames-as-given-names. Plus, with Ellis, Mckenzie, Hadley, Casey, and Oakley in use, Aubrey might see further gains.

Aubrey

Avery is a unisex name that is used four times as often today for girls as for boys. But while Avery's popularity is starting to soften for girls, it continues to get stronger for boys -- in keeping with our finding that gender neutral names are becoming more favored for boys than for girls. 

Avery

Antimony

Aster

Audrey

Avalon

This word name entered the US Top 1000 for both genders in 2015, though it premiered a little higher for girls. There are still more baby girls named Briar than baby boys -- 594 vs. 361 in 2021 -- but it's rising in popularity for both.

Briar fits the trend for <a href="https://nameberry.com/list/329/nature-baby-names">nature names</a>, and it also offers a fresh option for honoring a Brian.

Briar

Bethan

Blythe

Boheme

Calico

Ciel

Clover

Crimson

A laid-back cowboy name which feels both cool and gentle, Dallas has ranked in the US Top 500 since records began in 1880. Never super popular but surprisingly never out of style, Dallas is given to nearly 1400 boys in the US every year.

Although Dallas is often associated with the city in Texas, named for Vice President George M. Dallas, it's also: a Scottish place name with the meaning "meadow dwelling"; an English surname, meaning "valley house" and possibly an Irish name, meaning "skilled, assembly, council, or, blindness" depending on the translation. 
 
Today, Dallas is a gender neutral option too, though it is still given to nearly three times as many boys as girls. Currently a Top 300 choice Dallas meets a number of recent name trends: fresh though well established, a last name that works easily as a first name, and complete with an outdoorsy, nature-inspired meaning.

Dallas

Destiny

Emerson is a dignified, somewhat serious name associated with transcendental thinker Ralph Waldo Emerson. Much more popular now for girls since Desperate Housewife Teri Hatcher used it for her daughter, it is definitely still a viable <a href="https://nameberry.com/boys-names">boys name</a>.

Emerson

Grace

Greer

A glamorous surname name most famously borne by 1930s icon Jean Harlow (born Harlean Carpenter), Harlow is also the name of a town in the English county of Essex. Outside of the UK, Harlow would fit right in with contemporaries Arlo and Marlow(e).

Harlow

Harper got its start as a celebrity baby name when Paul Simon chose it for his now-grown son. Since then, other famous parents have followed suit: musician Tim Finn and actor Cecilia Peck both have sons called Harper.

Other high-profile Harpers, like author (Nelle) Harper Lee and starbabies Harper Burtka-Harris and Harper Beckham, are female, but it makes a handsome choice for either sex (and is in the US Top 1000 for both boys and girls).

Harper

Hope

A cute diminutive of Jack, already technically a nickname for John, famously borne by Hong Kong actor, director and martial artist Jackie Chan.

Jackie

Jade

Jayne

Juno

A predominantly male name in the US until the late 1950s, the name continued to rise for both sexes for both sexes for a further decade, before starting to decline for boys. Despite dropping out of the boys' Top 1000 in 2002, Kelly retains a rugged Irish charm.

 The name derives from Gaelic ceallach/em> "war" or ceall "church". It is also sometimes said to mean "bright-headed".

 Famous fictional namesakes include 1960s (male) TV spy Kelly Robinson, as well as one of the (female) Charlie's Angels. Real-life namesakes include actor and dancer Gene Kelly, as well as the legendary Grace Kelly.

Kelly

Kallan

In one recent year there were 60 baby girls in the US named Lark....and only eight baby boys. But there's no reason this bird name can't also be masculine, especially given that Robin is making a comeback for boys and Sparrow is a notable starbaby boy (he's Nicole Richie and Joel Madden's son).

If you need further convincing Girl Names for Boys was one of our hottest <a href="https://nameberry.com/blog/baby-name-trends-2024">baby name trends</a> of the year.

Lark

In the US, London is popular for both sexes, though as the name rises for girls, it's levelled off for boys. Of course, London is far less popular in  the UK and other English-speaking countries.

London

Lottie

Noel is British, fey, and sophisticated, connoting wit and creativity, much like namesake Noel Coward. Noel has also been a character on Felicity and Pretty Little Liars. Thanks to their association with Christmas, Noel and Noelle make ideal <a href="https://nameberry.com/list/577/names-for-december-babies">names for December babies</a> and <a href="https://nameberry.com/list/412/christmas-baby-names">names for Christmas babies</a>.

Noel

Nova might be a much more commonly used a girls' name, but enough parents saw unisex appeal in it for it to debut on the US Top 1000 for boys in 2017. Nova is an astronomical term for a star that suddenly increases in brightness, then fades. 
 Nova is not literally a new name but one that was used a century ago mainly for girls and is now making something of a comeback. Unisex references: Nova Scotia, the long-running science TV show, and the finest kind of lox.

Nova

Nell

Taken from a Scottish town, a Scots surname, and the name of an intricately patterned fabric, Paisley means "church" or "cemetery." It ranks highly for girls and is in US Top 100. It may feel a little swirly to ever catch on for boys, but with gentle names like Rowan, Teddy, Casey, Emery, and Trace rising in the US, and Hadley, Oakley, McKenzie, and Presley ranking in the UK, Paisley might one day be considered for any gender.

Paisley Currah, a political scientist, professor, author and advocate for transgender rights, is a notable bearer of the name.

Paisley

Paige

Pippi

Quinn is an engaging Celtic surname that is still on the rise for girls but beginning to flag for boys. As a female name, Quinn is in the Top 100, used for over 3000 baby girls last year, but toward the bottom of the Top 500 for boys, given to 700 baby boys.
Pop culture was an important influence on Quinn's popularity for both genders. Quinn started leaning decidedly toward the feminine thanks to a female cheerleader character on the television show Glee. For boys, Quinn's popularity was influenced by "The Mighty Quinn," the name of a movie, a band, and a Bob Dylan song. 
 Sharon Stone has a son named Quinn. Other ideas for boyish names like Quinn: Quinton, Quincy, Finn.

Quinn

Riley -- one of the most <a href="https://nameberry.com/popular-names/unisex">popular unisex names</a> -- is trendier now for girls though for boys it's a classic, ALWAYS ranking in the US Top 1000. 

In fact, after a decade of softening, Riley has recently taken a turn upward for boys, along with a lot of other gender-neutral names. These days, parents are embracing unisex names even more enthusiastically for their sons than for their daughters.

Riley ranks in the Top 100 for boys throughout the rest of the English-speaking world, though interestingly not in its native Ireland. In the US, Riley is the most popular <a href="https://nameberry.com/list/753/best-irish-girl-names">Irish name for girls</a>.

There are lots of athletes and other notable real-life namesakes for a boy named Riley, as well as fictional ones in Buffy the Vampire Slayer and Twilight: Eclipse. And Riley can easily be shortened for a boy to Ry or Lee.

Riley

Now that it's no longer fashionable for girls, Robin is rising for boys again. Robin Hood, Robin Williams, Christopher Robin, and Robin the Boy Wonder are all male namesakes, after all. It reentered the US Top 1000 <a href="https://nameberry.com/boys-names">boys names</a> in 2015 for the first time since 1999 and continues to bounce around the lower end of the Top 1000.

Robin is one of the unisex names that switched predominant genders a couple of times. Initially a boys' name, it hit its high point for both genders in the 1950s, eventually becoming more popular for girls. Now Robin is used near-equally for both sexes, given to 290 baby girls and 256 baby boys in the US in 2021.

Robin is one of the <a href="https://nameberry.com/popular-names/france">Top 100 Boy Names in France</a>.

Robin

Best known as a feminine diminutive, Romy is used now for boys too; has a lot of energy and bounce. Can be a short form of Roman or Romeo or a name in its own right.  Remy is another related choice, or you might want to go all the way to Romulus.

Romy

Reverie

Rose

Simone

This Americanized spelling of the Dutch name is now used nearly exclusively for girls in the US. 
While the Skyler variant remains more statistically unisex, the original Dutch spelling, Schuyler, is currently used so rarely that it could go either way, and fits right in with the surnames-as-first-names trend for boys.

Skylar

The Sydney spelling most popular for girls: it's in the Top 50 on the female side. Cool for a girl, still nerdy for a guy.

Sydney

Soleil

Taylor was much more popular throughout the 1990s for both genders than it is today. Close to the Top 50 <a href="https://nameberry.com/boys-names">boys' names</a> in the mid-1990s, Taylor recently fell out of the Top 500 for boys and out of the Top 100 for girls, and is predicted to continue on a downward trajectory for both genders. Similar but more stylish <a href="https://nameberry.com">baby names</a> today include Sawyer, Sayer and Thayer.

Taylor

The girls have dibs on Spring, Summer, and Autumn, leaving this name evocative of snowy landscapes as the one possible seasonal choice for boys. And naturally, it's one of the most obvious <a href="https://nameberry.com/list/89/winter-baby-names">names for winter babies</a>.

Winter

Wren may not be as time-honored a bird name choice as Robin or even Lark, but it's more fashionable and fresh, with a gentle and earthy vibe. 
Given to just a handful of children a decade ago, in 2023 there were over 1500 girls and more than 200 boys given this fun and friendly name 
 This petite bird was regarded in Ireland as the "magician of the birds" and the Druids considered it a bird of prophecy. In the early fable The Election of the 'King of Birds', the Wren is bestowed the crown after it hides in the plumage of the Eagle, meaning it manages to fly further and higher than all other birds! Able to sing loud and complex songs, Wren makes a cool, nature, inspired choice.

 In 2023, Wren entered the Top 1000 names for boys in the US, where it fits right in with the gentle vibes of popular choices like Rowan, Ezra and August. Reminiscent of Lawrence, Lorenzo, and Warren, Wren feels at once unexpected and fun, but totally wearable too.

 While currently more popular for girls, it is on the rise as a unisex name - and the link to the great Sir Christopher Wren, the celebrated eighteenth century designer of London's St. Paul's Cathedral, gives it strength, substance and style.

Wren

Willow

Zoey

Zuzu

superllama's list "Girl Names That Work For Boys" of 58 great name ideas: Ashley - Zuzu!

Girl Names That Work For Boys

Traditionally girl names that could work for boys or unisex names that boys can reclaim.