This name's similarity to Kalani and pretty Hawaiian origin helped catapult it into the Top 1000 for the first time in 2013.
 Kailani Craine is an Australian figure skater.

Kailani

More popular than the original form in Puerto Rico.

Kailany

Kaira

Kairi is the name of the main female character in the popular role-playing video game series, Kingdom Hearts. Voiced by Hayden Panettiere in the main series, Kairi is one of the seven Princesses of the Heart. Kairi entered the US Top 1000 in 2010 and was given to over 400 baby girls in one recent year.

Kairi

A huge name in the late 90's and most of the 00's, Kaitlyn's been on a downward trend in recent years. Kaitlyn and its soundalikes have been so well used in the US that they can no longer be seen as fresh, but it's still relatively popular in Canada.

Kaitlyn

Kalia

Kamelia

Variant spelling of Camila, common in Eastern Europe. Kamila and Kamilah are also feminine forms of the Arabic name Kamil, meaning "perfect".

Kamila

One of the most adaptable of the Middle Eastern names, partly because of its similarity to the western Camilla. 

Kamilah

Kamilia

Kamilla is the usual spelling of Camilla throughout Scandinavia and in Finland, Iceland, and Greenland. Kamma is an appealing short form.

Kamilla

Kamille

Kamyla

Karen is a Danish diminutive of Katherine, an English name derived from the Greek Aikaterine. The etymology of Aikaterine is contested, but generally considered to have arisen from the Greek root katharos, meaning "pure." Kaja is a related name, as it is another Danish variation of Katherine.
 
Karen, a sweet good-girl Danish import, was so popular during the baby boom (Karen was Number 3 in 1960) that it's locked firmly into fashion limbo today. Recently, the name Karen has been turned into a meme, representing a hostile white woman—one who usually wants to speak with the manager.
 
Parents who want to honor a Karen or choose an updated version of the name might want to consider the Irish Kieran, the Cornish Kerensa or Kerenza, or variations from Karina to Kyra.

Karen

This sweet and loving name, favored in recent years by a mix of Hispanic-American parents and Bob Dylan fans, was chosen for her daughter by TV actress Melina Kanakaredes. 

Karina

Both Karla and Carla are sliding down the ranks, though Karla remains far more popular in the USA than Carla.

Karla

Karol

Karola

Karolina

Karoline is the form of the classic Caroline commonly used in Germany and throughout Scandinavia, where it is popular. It's an acceptable if not tradition spelling variation, given to nearly 100 baby girls in the US last year, versus more than 3000 named Caroline.

Karoline

Karolyn

Karolyna

Karolyne

Kasandra

Kasey was a modestly popular choice among Millennial babies, particularly girls.

Kasey

Kassandra is actually the original form of Cassandra (Greek names do not have Cs), though most will see it as a Kardashianization, which is a shame! As you might expect, the C currently charts higher. Still, Kassandra can lead to all sorts of cute nicknames, such as Kassie, Kass, and Sandy.

Kassandra

Kataleia

Variation of Cataleya, both of which are popular among Hispanic families in the US. Zoe Saldana played a character named Cataleya in Colombiana.

Kataleya

Spelling variant of Catalina, currently on the rise in the US.

Katalina

Kate, in the headlines via Catherine Middleton aka the Princess of Wales, has been as pervasive as Kathy was in the 1950s and 1960s, both as a nickname for Katherine and Kaitlyn and as a strong, classic stand-alone name. 
 
Kate has an image that's independent, smart, and energetic, recalling Kate Hepburn, the heroine of The Taming of the Shrew/Kiss Me Kate, and contemporary Kates Winslet, Hudson, Moss, Spade and Beckinsale. Cate Blanchett has helped popularize that spelling of the name.
 Kate is also the female equivalent of Jack as a favorite character name in the movies, TV, and books. It's down-to-earth yet classy, common yet cool.
 Kate has always been, and remains, mega popular in Ireland.

Kate

One of the most popular of the trendy Caitlin variations, Katelyn points directly to components Kate and Lyn --making it a bit more traditionally feminine.

Katelyn

Katerina and its near-identical twin Katarina have a pleasingly lilting European sound, though for some Americans they may be uncomfortably close to Katrina, which will be linked for a long time to the hurricane that devastated New Orleans.

Katerina

Kathaleya

Kathalina

Katherine is one of the oldest, most diverse, and all-around best names: it's powerful, feminine, royal, saintly, classic, popular, and adaptable. Long one of the top <a href="https://nameberry.com/search/girls-names/k">girls' names starting with K</a>, Katherine has now been unseated on the popularity list by upstarts Kennedy and Kinsley, but a dip in popularity only adds to its charm.
 Katherine also has a wealth of spellings, short forms, and admirable namesakes. The Katherine spelling has been the preferred one in recent years, though Catherine (now associated with the Duchess of Cambridge) has a gentle vintage appeal, while the Katharine spelling relates to actress Kate Hepburn. Sleeker, more modern-feeling Kathryn has in fact been used for centuries and is still popular if not exactly stylish, and the Irish have favored Kathleen.
 Katherine's origins are lost in the mists of time. The earliest version in Ancient Greece was Ekaterine, which may have come from the name of a folk dance. Later, the spelling was changed under the influence of the Greek word katharos, meaning "pure" — a desirable virtue.
 Katherine has been used for countless literary figures over the centuries, from the spirited heroine of Shakespeare's Taming of the Shrew to the BFF in Fifty Shades of Grey to characters on TV's Castle and The Vampire Diaries.
 Martin Short and Tim Allen have daughters named Katherine.
 A profusion of nicknames includes Kate, Katie, Kathy, Kath, Kat, Kitty, Kay, and Kick. Among international variations are Catriona, Catarina, and Katrina. Two literary namesakes are Katherine Anne Porter and Katherine Mansfield.

Katherine

Kathia

Kathleen is the early Irish import version that came between Katherine and Kaitlin, and which hasn't been used in so long it's almost beginning to sound fresh again. It was a surprise pick by one of the hip Dixie Chicks, Martie Maguire. Kathleen was a Top 10 name from 1948 to 1951, and it is the subject of several old sentimental songs, such as "I'll Take You Home Again, Kathleen."
 From the eighteenth century, Kathleen Ni Houlihan appears in Irish songs as a symbol of Ireland, representing its struggle for independence.
 Kathy Griffin and Kate Walsh were born Kathleen, and it's J.K. Rowling's adopted middle name, after her paternal grandmother. JFK's sister Kathleen was known as Kick.

Kathleen

There are lots of Kathy moms and grandmas but very few babies, most of whom are now called Kate or Katie.

Kathy

One of the warm and earthy Russian nickname names now coming into style. Denzel Washington is the father of a Katia. 

Katia

The hurricane blew this one out of the realm of possibility. 

Katrina

Kayla is a modern invented name that emerged in the late 1950s. Despite its similarity to the name Michaela, Kayla most likely began as a combination of the then-popular name Kay and -la suffix. Alternatively, it may be a variation of the Yiddish name Kaila, which derived from the Hebrew name Kelila. Kayla can also be considered an Anglicization of the Gaelic surname MacCaollaidhe or MacCathail.
 
Kayla sprang from obscurity due to a soap opera, Days of Our Lives, in the 1980s to become a superstar, reaching Number 12. After giving birth to the related Mikayla and Kaylee, Kayla's now fallen in the charts. She's made more recent media appearances on Desperate Housewives and NCIS.

Kayla

A widely used name, Kaylee pulls together something from Kayla and something from Hailey, yet somehow loses something in the process. It has surpassed cousin Kayla on the charts and is one of three <a href="https://nameberry.com/search/girls-names/k">girls' names starting with K</a>that ranks in the US Top 100.

Kaylee

Kayra

This name first entered the US Top 1000 in 2016, probably because of R&B singer Kehlani, whose full name is Kehlani Ashley Parrish. It was the fastest-rising girls' name of the year. Kehlani may be a variation of Kalani. Hawaiian or Hawaiian like names are particularly popular for girls, with the lani suffix appending to a range of prefixes.

Kehlani

Keidy

Keila

Keilany

A unique Puerto Rican choice, sitting just outside the territory's Top 100.

Keilianys

A spelling variation of Kylie, an Aboriginal name first popularized by Australian singer Kylie Minogue. It’s now associated with Kylie Jenner, whom parents might be attempting to distance themselves from with this version of the name.
 
Keily could also be pronounced to rhyme with Keeley.

Keily

Keilyn

Keira is an attractive <a href="https://nameberry.com/girls-names">girls’ name</a> that's gotten a huge boost from the meteoric rise of Keira Knightley. Original spelling Kiera, which relates more directly to the male Kieran, was the more popular form until the rise of Keira Knightley reversed the order. Both are Anglicized versions of the Irish Ciara.

Keira

A long-popular African-American name first publicized by a child actress on the old Cosby Show, but it's no longer even in the Top 1,000. 

Keisha

Keisy

Once the quintessential bouncy teenager name, Kelly helped launch the trend of unisex <a href="https://nameberry.com/baby-names/168/irish-names">Irish names</a> . But it now takes a backseat to more substantial surname names like Kennedy.

Kelly

Kendra was once seen as a feminization of Kenneth -- but it's now firmly established as a standalone. American parents can't seem to make up their mind about it though: it was one of 2013's fastest-rising names, entering the Top 200 for the first time since 2000, but then it tumbled again. 

Kendra

Kenia debuted on the US Top 1000 list in 1992. Even though it currently ranks higher than original spelling Kenya, this is a hard sell as it alters the spelling of the African nation.
 The significant rise — 165 places in 2022 — of this spelling could be aided by actress and singer-songwriter Kenia Arias.

Kenia

Kenisha

Kenya, a name borrowed from the East African nation and theoretically unisex, is now used mostly for girls. While it's had its ups and downs since entering the US Top 1000 in 1968, it currently ranks lower than spelling variant Kenia. 

 The country of Kenya gets its name from Mount Kenya, referred to it as "Kirinyaga" or "Kerenyaga" by the local Kikuyu people, meaning "mountain of whiteness" due to its snow-capped peak.

Kenya

Israeli-born singer Keren Ann introduced this traditional Hebrew name to this country, where it could well be mistaken for Karen. 

Keren

While Kayla has been a mainstay in the US Top 1000 list since the 1960s, alternate version Keyla is relatively new, first entering the charts in 2002. While this spelling also has the possibility of being pronounced KEE-lah, it's most likely to cause confusing and frustration in the shadow of the much more popular spelling.
 Keyla was a fast riser in 2022, jumping 84 spots — possibly inspired by actress Keyla Monterroso Mejia from the popular show Abbott Elementary.

Keyla

Along with Keilianys, Keylianis is a name found only in Puerto Rico. They may be variations of the Hawaiian name Keilani, meaning "heaven" or "glorious chief."

Keylianis

Keyra

Keysha

Khaleesi is an invented name introduced to the world by inventive and prolific author George R. R. Martin for his wildly popular Game of Thrones series—it's Dothraki for "queen" and is one of the titles of the character Daenerys. It entered the US Top 1000 in 2014.
 Martin's series is having a powerful influence on the baby name culture, with sister name Arya the fastest rising <a href="https://nameberry.com/girls-names">girls’ name</a> in the US in 2012.
 We can't help feel, however, that this name is going to date about as fast as a pointy-toed boots or feathered hair. Advice: look for another name.

Khaleesi

Khamila

Khloe's a variation of the popular Chloe, thanks to reality star Karshadian of the K-named family. Khloe jumped a whopping 101 places into 2009's Top 100 and peaked at 42 in 2010 but has declined in popularity in recent years.

Khloe

Kiana (or more appropriately, Quiana) is the original polyester name, now falling fast out of favor.
 Kiana Brown is an American singer-songwriter and actress, currently appearing on the MTV series Scream.

Kiana

Kianna

Kiara can be considered a variation of both the Italian name Chiara and the Irish name Ciara. Chiara is the Italian form of Clara, meaning "bright" or "clear," while Ciara is the feminine form of male given name Ciar, derived from the old Irish cíar, meaning "dark." 
 
Kiara is also an Australian name derived from an Aboriginal word for the white cockatoo, and has roots as a Korean name meaning "first ray of sun".
 
Simba's daughter in The Lion King, Kiara fits in with stylish modern names like Keira and Kaia.

Kiara

Kimberlie

Though Kimberly -- a South African diamond town name -- hasn't been stylish for decades, it was in the Top 5 throughout the sixties and seventies and long ranked among the top <a href="https://nameberry.com/search/girls-names/k">girls' names starting with K</a>. Names with the -ly or -ley ending continue to be trendy, though, with Ashley falling while new choices such as Hadley and Kinsley are rising.

Kimberly

Though such cognates of Kira as Keira, Kyra, and Ciara are evermore popular throughout Europe and in the U.S., this Cyrus relative has a different root.  Variations include Keera, Kiera, Kierra, Kirah, Kiri, Kiria, Kiriah, Kiro, Kirra, Kirrah, Kirri, Kirya, and Kyra.

Kira

Kiria

Rather than simplifying matters, this spelling only complicates them. 

Kisha

Kristal

This streamlined form of a pretty and feminine classic may not be as popular as it once was, but it's never out of style. A royal name best used now in its full glory rather than as nicknames Kris or Kristy. 

Kristina

Kristy (and Kristi and Kristie) are the ultimate kool girl nicknames of the sixties and seventies, not kwite as kute any more.

Kristy

Krizia is a stylish Italian clothing and handbag designer and manufacturer. The name is an interesting alternative to all those old Cris/Kris-starting names. Krizia is one of those <a href="https://nameberry.com/baby-names/505/italian-names-for-girls">Italian names for girls</a> that's both intriguing and rare.

Krizia

This spelling variation of Crystal rose all the way up to #53 in the US in 1985.

Krystal

Kyara

Popular pop name, inspired by Australian singer Kylie Minogue. It was at its height in Australia in the 1970s and early 80s; often cited as a Noongar name meaning "boomerang". 

 Kylie has also been used as a feminine form of the Scottish name Kyle. The youngest Kardashian sister, Kylie Jenner, is undoubtedly keeping its style going.

Kylie

The <a href="https://nameberry.com/girl-names">girls' name</a> Kyra sounds like the also popular Keira/Kiera, but has a different root. There are twice as many baby girls named Keira as Kyra, with Kiera in third place. Kyra now ranks at #590 and is most familiar via actress Kyra Sedgwick.

Kyra

Kaelys

Kailanys

Kaleysha

Kalianys

Kamil

Karelis

Karelisse

Kareliz

Karelyn

Karelys

Kariam

Karian

Kariana

Kariangelys

Karianis

Karianys

Karielis

Karielys

jevohh's list "Puerto Rican Girl names beginning with K" of 171 great name ideas: Kailani - Kynaisha!