This name leapt into the female column via vixen Alexis Carrington on 'Dynasty" in the 1980s. It's more popular for girls, but it's still a widely used boys' names and is one of the most <a href="https://nameberry.com/unisex-names">popular unisex names</a> in the US today.

Alexis is an ancient (male) saints' name as well as the name of a third century BC comic poet. In the Alexius version, it was the name of several Byzantine emperors.

Alexis

This shows up on the Social Security data for boys, but these days is mostly female: 2700 baby girls were named Allison last year versus six baby boys.

But given the emerging trend of female names for boys, Allison could see some more use as a male name.

Allison

Andrea may be a gender neutral name in its native Italy and other European countries, but in the US it's 98 percent a girls' name, with only about 20 males to more than 1800 baby girl given that name in the most recent year counted.

Andrea

As a boys' name, Angel has two distinct name personalities. One is as a perennial favorite Hispanic <a href="https://nameberry.com/boys-names">boys’ name</a>, popular in the US along with Spain, Mexico, and South America.
 
Then Buffy the Vampire Slayer brought Angel into the Anglo camp, where it's now heard more frequently, pronounced the English way. Angel entered the boys' Top 100 in 1997 and remains solidly there today.
 
Angel's popularity for girls began to wane at the same time the name took off for boys. Any child named Angel, of whatever gender or nationality, has a, well, angelic image to live up to or live down.
 Other notable male Angels: the husband in Thomas Hardy's Tess of the D'Urbervilles, a character on Dexter, and several athletes.

Angel

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

Alba

Ally

Amber

Audrey

Avis

Avril 

Barbie

Beverly

Branwen

Brenda

Briar

Brie

Bronte

While the variation Carmine is more familiar for boys, Carmen has also been used as a masculine name; consider the very macho Carmen Basilio — the American boxer famous for defeating the great Sugar Ray Robinson — or composer Carmen Dragon. 

Spanish and Italian forms Carmelo and Carmello are also quite popular in the US, with Carmelo ranking in the Top 1000.

Carmen

Carrie

Cerise

Claire

Cleo

Clover

Corrine 

Dory

Dayna

This Biblical name was rising dramatically for boys, but has plateaued in recent years. Although it's more popular for girls, it's a delightful unisex choice. Eden is one of the <a href="https://nameberry.com/popular-names/france">Top 100 Boy Names in France</a>.

Eden

Edith

Ellen

Elma

Erin

Faith

Fern

Gail

Grace

Gwyneth 

Hailey

Hazel

Hope

Indi 

Inez

There are now more boys than girls given the name Joan each year in the US, although the two are distinct names. The masculine version, pronounced with the emphasis on the second syllable, is among the <a href="https://nameberry.com/popular-names/spain">top names in Spain</a>.

Joan

Jodie

June

Juniper is a nature name that we really like. While it's trendiest for girls -- about 2500 baby girls were named Juniper in 2022 versus 34 baby boys -- the most notable Juniper in history was the saint Brother Juniper, a follower of Saint Francis renowned for his generosity.  Blessed Junipero Serra, who founded the first of the California Missions, took his name from the earlier Saint Juniper.

Juniper

Jocelyn 

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

Kelsey (ex-Frasier) Grammer is a famous male bearer, although most modern Kelseys are female. It derives from several English place names, possibly meaning "Cenel's island", from the Old English name Cenel "fierce".

Kelsey

Kady

Kaia

Karen

Kristen

Lynn

Lauren

Lavender

Lenore

Lillian

Linda

Lois

Lucia

Brought into the American consciousness as the nickname of ballet great Mikhail Baryshnikov, it more recently took on a unisex air via TV and screen actress Mischa Barton. Could become the next Sasha. 

Misha

Mara

Maris

Michelle

Nicola may be more familiar as a female name in English-speaking countries, but it's a popular classic choice for Italian baby boys – currently just outside the Top 50 there. A historic bearer is Nicola Pisano, a renowned and influential thirteenth century sculptor. 

 Spelled with a K, it's also used in many Slavic countries, as in Nikola Tesla, the eminent Serbian-American inventor.

Nicola

Neve

Olive

The first famous Paris was a mythological prince of incredible beauty. The most recent was media darling Paris Hilton, inspirer of a generation of baby-girl namesakes. But since Pierce Brosnan and other celebs have continued to use it for their sons, the name retains some masculine identity. For girls, it jumped from #464 to #412 in the past year alone. 

Paris

Patsy has been rarely heard for half a century, for either gender, and we're not expecting that to change in the near future.. 

Patsy

Paige

Make that bird name, and while it does work for both genders, it's far more popular for girls, via Raven Symone. 

Raven

Ruby could be a short form of the Biblical name Reuben and especially its streamlined form, Ruben. As a gemstone name, it's currently enjoying a fresh boom of popularity for girls – nearing the US Top 50 for the first time in almost a century. 
Despite its two waves of popularity for girls, it has been occasionally used for boys since the 1890s. Since Ruby re-entered the US Top 100 for girls in 2011, nearly 70 boys have been bestowed the name.
 
While Ruby isn't likely to become a (statistically) unisex name just yet, as softer options like True, Ari, Robin, Casey, Alby, and Tatum come into style, perhaps a few more parents will consider it?

Ruby

Renee

Rosa

Rose

Ruth

A sweet Scottish short form of Alexander which is feeling newly appealing now the era of Sandra is far behind us. Sandy would also work well as a nickname for a child with pale red or dark blond hair.

Sandy

The energetic Russian nickname name Sasha is being used increasingly on its own, though since the prominence of the First Daughter, more than 90% of the American babies named Sasha are girls. Sacha Baron Cohen bears one of the alternate spellings.  


Sasha

Southern name still occasionally heard in a male context (author Shelby Foote and the son of singer/sitcom star Reba McEntire), but it's much more associated with girls. 

Shelby

Simone

Sky is an ambigender nature name that was first legitimized as the character of Sky Masterson in the 1950 musical Guys and Dolls, played in the film version by Marlon Brando. It's a name we appreciate for its clear, wide-open feel, less hippyish than others like Rainbow and Starlight, and makes an appealing middle name possibility.
 Sky is the name of Sophie's fiance in Mamma Mia, and there are both Power Rangers and Transformers with the name. Elizabeth Berkley used it for her son.
 It is also spelled Skye, as in the island in the Inner Hebrides of Scotland. Plus, it's a logical nickname for the variously spelled Schuylers and Skylers.

Stacy

Saffron

Sandra

Sonya

Sparrow

Star

Stella

Summer

Tace

Thea

Thisbe

Tori

Deriving from the Roman cognomen Vivianus, Vivian was originally a masculine name, with Vivien being a feminine soundalike coined by Alfred Lord Tennyson for the Lady of the Lake in his famous poetic adaptation of the legend of King Arthur. It has since become a much more popular choice for girls in the US, but retains a refined British charm which sees it cropping up occasionally for boys in the Telegraph birth announcements. Fun fact: Vivian is the middle name of Daniel Cleaver, Hugh Grant's rakish character in the Bridget Jones movies.

Vivian

Willow

Zoey

TotallyGeekage's list "Female Names that are perfect for Boys!" of 99 great name ideas: Alexis - Zoey!

Female Names that are perfect for Boys!

There seems to be a trend of giving masculine names to girls, which is awesome. But how come this isn't the other way around? 
I'm on a quest to find female names that work really well for boys.
All my own personal opinion, of course.