Less familiar than the feminine Jacinta. Jacinto is a sweet floral boy name that was most popular in early 20th century Spain and Brazil.

Most things Jul-related – from the month of July to popular modern names Julia and Julian – originate with Roman emperor Julius Caesar, and the month name July is no exception. Fifteen girls and seven boys were named July in 2013, putting this month name into the class of gender neutral names.

Juna, a variation of the newly stylish month name June, goddess name Juno, or literary Djuna, is among the fresher-feeling girl names starting with J. While Juna has never been given to more than 50 baby girls per year in the US, it's a popular choice in Germany, Switzerland and the Netherlands.

Juno is an ancient name that feels as fresh as if it had been minted, well, not yesterday, but in 2007. Since the release of the popular indie film Juno, this lively but strong Roman goddess name has held new potential as a baby name. Currently in the UK Top 500 and used in The Netherlands too, Juno is on the rise in the US - and is 15 times more popular than it was before the release of the film.

Junot, which sounds like the goddess and indie movie name "Juno" and the Alaskan place name Juneau, is actually someting completely different. The literati will recognize the unusual name of writer Junot Diaz.

This Old Testament name feels feminine to a modern English speaker, thought the Biblical Jarah was male. In the most recent year counted, there were seven girls and five boys given the name. With the rise of Biblical boys' names that end in vowel sounds like Noah and Ezra, Jarah may have new possibilities for boys. An alternate spelling is Jarrah, which is also a distinct Arabic name. Jared and Jareth are unrelated but similar-sounding Biblical choices for boys.

A bold and energetic Hawaiian name which blends two fashionable favorites: Kai and Koa.

Kauai is known as the Garden Isle of Hawaii. Ironically, it qualifies as a baby name based on spelling variation and homonym Kawhi, as in basketball star Kawhi Leonard.

Kalindi is a lovely, rhythmic name refers to one of the seven sacred rivers of India.

St. Kateri Teckakwitha is the first Native American saint, canonized in 2012. St. Kateri was the daughter of a Mohawk warrior, born in 1656 in upstate New York. She converted to Christianity at age 20 and died at 24, and was known as "Lily of the Mohawk." Kateri was the name the saint took on, a native variation of Katherine, upon her baptism.

A saintly surname that is used steadily for boys and occasionally for girls, mainly by Catholic parents. The Polish Franciscan priest St. Maximilian Maria Kolbe offered himself in place of another who was sentenced to death in Auschwitz, and was canonized for his martyrdom.

Lark is getting some new and well-deserved attention as a post-Robin and Raven bird name. Although it was first recorded as a name in the 1830's, it has never appeared on the Social Security list.

Evocative modern unisex choice brought into the spotlight by actress Lake Bell.

A rarer-than-rare botanical name with a sting in the tail - makes an interesting masculine option that fits in with Aspen, Lark and Arthur.

Swaggering western place-name with a lot of cowboy bravado and panache.

Could Lilac be the next Lila or Lily or Violet? It certainly has a lot going for it--those lilting double 'l's, the fabulous fragrance it exudes, and the fact that it's a color name as well, providing a ready made nursery theme. In addition, the lilac is symbolic of first love.

Lumen is a Latin word meaning "light", and the term used for the measurement of light output (making it an attractive choice for science-buffs).

Lupin is an unusual flower name with roots in Old French, from the Latin lupinus, meaning "pertaining to the wolf". In the literary world, it's the surname of Remus Lupin, a popular character in the Harry Potter franchise and a werewolf.

Llyr is a name with a great meaning and a lovely sound, but that sound is going to be next to impossible to get non-Welsh speaking people to pronounce (google the double L sound in Welsh). If you are outside Wales, you may wish to consider the Irish alternative Lir, which has the same meaning and an easier sound.

The name of the second-biggest (and third-most populous) island in Hawaii was one of the fastest-rising boys' names of 2017. A major factor was surely Dwayne Johnson's character in Moana, the Polynesian demigod named Maui, a mythological trickster who slowed the sun to create the days. (It fell back to normal levels in the following years.)