What a lovely name for the much-longed for daughter - no wonder Aino is in the Top 5 in Finland, whence the name originates. Like other popular Finnish names, Aino is short and avoids the ubiquitous "a" ending we usually see in <a href="https://nameberry.com/girls-names">feminine names</a>, which gives it a fresh feel and sound.
 The name Aino was created by Finnish author Elias Lönnrot who compiled the epic poem Kalevala. In the work, Aino was the only daughter of ambitious parents who chooses death rather than complying with her father's wish that she marry a powerful but old God. The name was immediately popular with the Finnish nationalist community and has recently enjoyed a resurgence of popularity.

Aino

Akudo is an Igbo-Nigerian name stemming from the Igbo word 'udo' meaning peace. Unlike other names containing the name "Udo", Akudo is a feminine name.

Akudo

Akiko

A word name with fashionable o-ending that has associations with both the homespun fabric and the mottled cat. Alice Cooper named his daughter Calico decades ago.

Calico

Best known as one of the moons of Jupiter, Callisto was a nymph coveted by Zeus who was turned into a bear by Hera, becoming the Great Bear (Ursa Major) constellation.

Callisto

Cato may have risen to new prominence in the English speaking world as an ancient Roman boys' name, popularized by The Hunger Games. But in the Netherlands, it's most widely used as a short form for Catharina and other forms of Katherine, ranking close to the Top 100, higher than any formal variation of the name.

Cato for a girl is a cute idea and a fresh way to shorten the ubiquitous Catherine.

Cato

Roman statesman's name with a cool and quirky sound. Marcus Tullius Cicero was a Roman scholar, orator and lawyer who had an immense impact on the Latin language. 

Cicero

Cleo, one of the few girls' names to boast the cool-yet-lively o ending, is of course short for Cleopatra, the name of one of the most powerful women in history.
 Cleo was most popular in the early decades of the twentieth century--when it was also used for boys. The opening of the Egyptian tombs along with the 1917 silent film starring Theda Bara popularized a range of now-obscure Cleopatra diminutives, including Cleora, and Cleola. 
 A distinguished bearer is the British jazz singer Cleo Laine, and there have been Cleos on two TV dramas: ER and Law & Order: Special Victims Unit.
Maybe the fact that Cleo was recently chosen by Friends' David Schwimmer will ignite a welcome revival.
 Sound-alike Clio is the name of the ancient Greek mythological muse of history and heroic poetry, one that is rich with modern charm and would also make an intriguing choice,

Cleo

Coco came to prominence as the nickname of the legendary French designer Chanel (born Gabrielle) and has lately become a starbaby favorite, initially chosen by Courteney Cox for her daughter Coco Riley in 2004. At first it was the kind of name that the press loves to ridicule, but we predict Coco's heading for more broad acceptance and even popularity.

Coco

Dido was the heroine of Virgil's Aeneid and of the opera "Dido and Aeneas," and in Roman mythology the founder of Carthage. A strong ancient name in the Juno mode, but it could have some awkward associations down the line. 
 The English singer-songwriter Dido was born with the equally unusual name Florian Cloud, but was called Dido since childhood.

Dido

Echo, the pretty, resonant name of a legendary nymph, was the heroine of Joss Whedon's sci-fi series Dollhouse. Nick Hexum, of the band 311, named his daughter Echo Love.
 In the Greek myth, Echo was a nymph whose unrequited love for Narcissus caused her to fade away until all that was left was the sound of her voice. Obviously, a name with a lot of reverberations.

Echo

Hanako has a delicate sound and quaint meaning -- but there's a catch. According to widespread urban legend in Japan, Hanako is the name of the ghost of a little girl who haunts school bathrooms, who sometimes answers if you call her name. The so-called "Hanako of the Toilet" has been the subject of countless fictional adaptations since the rumor started to circulate in the 1950s. Hanako was once such a common name that it was used in the Japanese equivalent of "Jane Doe," but it's gotten much less popular as the legend of Hanako-san has spread.

Hanako

Despite the possibility of gender confusion, the Hero in Greek myth was a woman. Myleene Klass got that when she chose Hero for her daughter, and Sam Taylor-Wood and Aaron Johnson used it as their daughter's middle--and we wouldn't be surprised to see more girls with this heroic name.
 In Greek legend young Leander swam across dangerous waters every night to court his beloved Hero. In Shakespeare's Much Ado About Nothing, Hero is the love interest of Claudio and cousin of Beatrice.

Hero

Indigo is one of the most appealing and evocative of the new generation of color names. Color names have joined flower and jewel names -- in a big way -- and Indigo, a deep blue-purple dye from plants native to India, is particularly striking for both girls and boys. Indigo is the name of a character in the Ntozake Shange novel Sassafrass, Cypress & Indigo, and was used for his daughter by Lou Diamond Phillips.
 Some cultural references: The Indigo Girls are a folk duo, 'Mood Indigo' is a classic Duke Ellington jazz composition, and there is a 1970's New Age theory that Indigo children possess special, sometimes supernatural abilities.

Indigo

Ino was one of the Queens of Thebes who, after her death, became an immortal. Ino raised her nephew, Dionysus (son of Semele and Zeus), provoking the wrath of Hera. In desperation Ino threw herself into the sea and was thereafter venerated as Leucothea (The White Goddess).
 In Japanese, Ino means wild boar. Ino is most familiar in a Japanese context from Ino Yamanaka, a character in the Naruto anime.
 Despite being short and sweet, and bearing the fashionable "O" ending, Ino is one of the rarer Greek mythology names.

Io may be one of the slightest names in the book, but there aren't many two-letter names with as much substance as this Greek mythological example.  Io, a name used for the largest moon of Jupiter, was in classic myth raped by Zeus and escaped from him by changing herself into a cow. 

With Isabel getting so popular, parents are searching for new varieties of the name, and Isabeau is one that makes a lovely French twist. 
 Isabeau of Bavaria was the wife of King Charles VI of France--and it was possibly a nickname for Elisabeth. It is also the name of an opera by Pietro Mascagni, a retelling of the medieval English legend of Lady Godiva, and in the 1985 film Ladyhawke, Michelle Pfeiffer plays the heroine, Lady Isabeau d'Arjou, who assumes the form of a hawk during the day.

Isabeau

This is a Greenlandic girls' name made famous when Princess Mary and Prince Frederik named their twin daughter Josephine Sophia Ivalo Mathilda. 

Ivalo

Among the Top Ten Basque baby girls' names, this is actually the place name of an island and is related to other such names as Isla. An unusual O-ending girls' name.

Izaro

Juno is an ancient name that feels as fresh as if it had been minted &mdash; well, not yesterday, but in 2007. Since the release of the popular indie film Juno, this lively but strong o-ending Roman goddess name has become more and more prominent as a potential baby name &mdash; Coldplay's Will Champion chose Juno for one of his twins (whose brother is the kingly Rex).
 
Juno was the sister and wife (hmmm) of Jupiter, and the mother of Mars and Vulcan. The patron goddess of Rome and protector of women and marriage, Juno's name is heard in Virgil's Aeneid, Shakespeare's The Tempest, and Sean O'Casey's 1924 play Juno and the Paycock. The deity's name is of uncertain origin, but likely derives from the root -iuwen, meaning young. With Jupiter and Minerva, she made the Capitoline triad, whose worship was at the very center of Roman religion.

Juno

Contrary to popular belief, the name Kahlo has German origins, rather than Spanish. It derives from kahl, a German word meaning "bald." Mexican Artist Frida Kahlo was born to a German father, photographer Guillermo Kahlo. 
 
Kahlo is given to baby girls and boys in roughly equal numbers each year. It's a modern hero name — the names of virtually all baby Kahlos were inspired by Frida.

Kahlo

Kazuko is a Japanese feminine name that combines the character kazu ("harmony") with ko ("child"), creating a name that in total symbolises a child of peace. In Japan, names ending in ‘ko’ are rarely used as they now sound oldfashioned. More ‘trendy’ names are Kazumi (which means beautiful peace and can me used on both boys and girls), Kazuki (a masculine name meaning hope of peace) and Kazuo (also a masculine name meaning man of peace). The emphasis is on the first syllable, so it is said "KA-zoo-ko".

Kazuko

Japanese classic with optimistic meaning. 

Keiko

Lilo is the name of the spunky little Hawaiian girl character in the Disney movie Lilo & Stitch-- and is also Lindsay Lohan's nickname. Multi-cultural, it can be found in Hawaiian, German and Hebrew nomenclature.

Lilo

Looks unusual and a little on the brink of weird; sounds like a little lioness named Leo. 

Llio

Yes, it's pronounced with a long o sound at the end, just like Margo and Margot.  This spelling was popularized by supermodel, actress, and tragic Hemingway granddaughter Margaux, whose name spelling came courtesy of a bottle of French wine.  (The original spelling of her name was Margot; she changed it when she heard her parents were drinking a bottle of Chateau Margaux the night she was conceived.)

Margo itself is a diminutive of Margaret, which means "pearl" or, in its French version, "daisy."  Margaret or Marguerite would be more stylish variations now.

Margaux

Margo and Margot sound exactly the same, so why has the Margot spelling hopped back onto the Top 1000, outpacing Margo in numbers more than two to one? (Over 350 baby girls were named Margot in the most recent year, versus 150 named Margo.)

Credit the Gwyneth Paltrow character Margot in The Royal Tennenbaums and hot Australian star Margot Robbie. And maybe to some parents, the Margot spelling seems more like a complete name.
But it may also create some pronunciation confusion. And Margo gives you the same blend of fashionable o-ending and classic feel.

Margo

Margot is suddenly a star again. After a nearly-half century absence, it hopped back on the Top 1000 list in 2013 and is on the rise. The Margot spelling is now given to three times as many baby girls as the Margo one.
 Makes sense, as Margot is a name that has a lot going for it: spelled with or without the final 't', it's one of the few <a href="https://nameberry.com/girls-names">girls’ names</a> with the dynamic o-ending sound; it's familiar, yet uncommon enough to be distinctive.
 
Margot originated as a French pet form of Marguerite, a name that ultimately derived from the Greek margarites, meaning "pearl." Other spellings include Margo and Margaux. Margaux Hemingway was originally Margot but changed the spelling to honor the wine from the French village of Margaux that was drunk by her parents on the night she was conceived.
 Movie buffs will remember Bette Davis's archetypal role as Margo Channing in All About Eve (the actress named her own daughter Margot), while balletomanes will associate the name with the great English dancer Margot Fonteyn (born Margaret).
 In the film Margot at the Wedding, Margot was played by Nicole Kidman; in The Royal Tenenbaums, Gwyneth Paltrow was Margot T. Gorgeous Australian actress Margot Robbie has made an impact here in the film The Wolf of Wall Street.

Margot

Mieko

Milagro

The grandiose name of a French revolutionary – in full: Honoré Gabriel Riqueti, comte de Mirabeau. Mirabeau likely derives from Latin mirabilis, making it a masculine cousin of Mirabelle.

Mirabeau

New Zealand writer Ngaio (born Edith Ngaio) Marsh is the best-known bearer of this Maori nature name, properly pronounced ng (like the end of sing) -EYE-oh. It is the name of a tree indigenous to New Zealand, also called the Mousehole Tree.

Ngaio

This Dutch name stems from the Greek root word "philos" meaning "love". It is relatively common in the Netherlands.

Philou

Olympic skier Picabo Street was allowed to choose her name at the age of three, and picked it possibly (a) after a nearby Idaho town or (b) because she loved to play peekaboo. No longer a single-person name, it is now worn by a number of satisfied bearers.

Picabo

Prideaux is a Cornish place name and surname that is occasionally attested as a girls' first name. It likely stems from the French phrase "pré de eaux", meaning meadow of waters. For fans of Margaux, Prideaux might be a less-common and very pretty alternative.

Prideaux

Rio is one of Japan's most popular girls names, constantly sitting in that country's Top 10. Of course, Rio may also stem from the Portuguese and Spanish word for river, and the Brazilian city Rio de Janeiro. A truly international name for a cosmopolitan baby!

Best known to the West through the story of Sadako and the thousand paper cranes, which tells the story of Sadako Sasaki, this name has become synonymous with peace. Sadako was two years old when the atomic bomb was dropped on Hiroshima. She later developed radiation-related cancer. Whilst in hospital, Sadako heard a tale that whoever folds 1000 paper cranes would be granted a wish, and she set out to fold 1000 paper cranes. Sadako was only able to complete 644 cranes before her death but her friends completed the remaining cranes so that she could be buried with 1000 origami cranes.

Sadako

Name of the 7th century BC Greek lyric poet born on the island of Lesbos, whose name has been synonymous with lesbian love.  Though this name is rarely used today, it certainly could be and, some might say, SHOULD be revived.

Sappho

Tornado first meant thunderstorm and only later came to mean whirlwind, the common modern meaning.  More recently, Tornado is the first name of a tennis-playing teen whose sister is called the equally attention-getting Hurricane.  Both names work for either gender, if you think you can withstand the storm jokes.

Tornado

Tupelo, the name of a Mississippi city as well as a tree with soft, light wood that grows in the swamps of the south, attracted some attention as a first name via author Tupelo Hassman. The song Tupelo Honey also brought it some notoriety.
 
Actress Riley Keough, granddaughter of Elvis Presley, named her daughter Tupelo Storm in honor of Elvis's birth city.

Tupelo

An ancient tree that figures in literature from Shakespeare to Harry Potter and is believed to possess magical powers, Willow is a lovely name, as graceful as its inspiration.
 Willow's use as a given name derives directly from the willow tree, whose name was derived from the Old English word welig, meaning "willow." Willow trees are associated with grace and elegance, which gave way to the adjective "willowy." Other names with meanings related to willows include Arava, Willoughby, Dozier, Wellesley, Selby, and Salton.
 
This elegant and charming nature name has been chosen for their daughters by Will Smith and Jada Pinkett Smith, Michelle Monaghan and Pink. It's been a fast riser in recent years, climbing along with other Will names Willa, William and Will, having taken off here a year after the character of Willow was introduced on Buffy the Vampire Slayer in 1997.
 
Willow is also popular in other English-speaking countries: Australia and the UK, Canada, Ireland, and Scotland.
 
The name has transcended its one-time hippie aura to move into the realm of reappraised and appreciated <a href="https://nameberry.com/list/329/nature-baby-names">nature names</a>. The willow is believed by the Romani to possess the ability to heal the sick and rejuvenate the aged.
 
Pink was quoted as saying her choice was influenced by a willow tree she grew up near, and that it is the most flexible tree that nothing can break—no wind, no elements, it can bend and withstand anything.

Willow

Yinuo is a Chinese female name meaning "promise." It is part of an idiomatic expression "Yinuo Qianjin" (一诺千金), which means "one promise; one thousand gold" or "keep your word." This Chinese name has the advantage of being relatively easy to pronounce for non-Chinese speakers. People called Yinuo include Yinuo Mu, principle harpist in the Melbourne Symphony Orchestra and Yinuo Chen, a Chinese actress who starred in Empresses in the Palace.

Girls names that end in O