Luna collects boy names

Judson remained in the US Top 1000 every year until it dropped off in 1987. In 2014, the named rejoined the list. With Hudson gaining in popularity, Judson—a possible alternative to Justin—could follow its path.

Kai is an internationally flexible name with many possible origins and meanings, growing in popularity in the US and a diverse range of European countries.

Kazuki is related to names like Kazuko, Kazuo and Kazumi

Keegan is one of a clan of spirited Irish surnames starting with K and ending with 'n'--this one with the cheery double 'e' in the middle-- that are appealing to an increasing number of parents. It derives from Mac Aodhagáin, meaning "son (or descendant) of Aodhagán," a diminutive of the Irish name Aodh--pronounced Aye.

This attractive surname name still projects that Kennedy family charisma. While it didn't come into widespread use until long after the deaths of martyred heroes President John F. or Senator Robert Kennedy, Kennedy is now one of the most popular unisex names, particularly for girls. This is one name that manages to sound trendy and traditional at the same time.

Kenneth may have lost much of its luster now, but Kenneth has had its moments of glory. The first king of Scotland was Kenneth, and Sir Kenneth, a Christian crusader, was the hero of the Sir Walter Scott novel The Talisman.

Lachlan is as Scottish as haggis and tartan plaid kilts—a favorite used throughout England, Scotland, Australia, and New Zealand—and just beginning to be noticed in the US: it reached the Top 1000 for the first time in 2013. An ancient name, Lachlan was originally used to describe the Viking invaders of Scotland, those from the land of the lochs.

Though the fuller Lancelot has for the most part been shunned as a 'too-much-name' name, the short form Lance has been consistently in or around the Top 500 since 1938, climbing as high as Number 76 in 1970. It was used as a character name by Walter Scott as far back as 1823. Lance is also the name of a medieval weapon, making this name all boy.

The discoverer of this lovely bright blue gemstone named it after his daughter Larissa and the sea (mar), hence Larimar. Despite the feminine origins, the harder -mar ending makes this work for boys too, similar to Delmar and Elmer.

This first name was once a surname derived from Old English. Used quietly a century ago, the current fashion for two-syllable boy names ending in n makes this one a new hit.

Ledger, another surname-turned-first name, carries associations of the great and late Australian actor Heath Ledger. It appeared on the US Top 1000 for the first time in 2017, perhaps bolstered by the potential of Lej and Edge as nicknames.

This is an unusual surname and geographical name of medieval Scottish origin that might serve as a possible alternative to the aging Keith, though it's a bit tough on the tongue. More popularly spelt Laith in Scotland itself, which happens to correspond to an Arabic name meaning 'lion'.

Leo is a strong-yet-friendly name that was common among the Romans, used for thirteen popes, and is now at its highest point ever in the US thanks in part to Leonardo "Leo" DiCaprio.

This form got noticed as the first name of long-reigning Russian president Brezhnev; other bearers include playwright and short-story writer Andreyev, Leonid the Magnificent,a Russian performance artist on America's Got Talent, and Leonid McGill, the protagonist of a Walter Mosley private eye series. All in all, though, Leonid is not the most likely to join the pride of lion-related names here.

This aristocratic, somewhat formal Germanic route to the popular Leo is a royal name: Queen Victoria used it to honor a favorite uncle, King Leopold of Belgium. Though Leopold sounds as if it might be a leonine name, it's not really a relative of such choices as Leon, and Leonard.

Liam is the top boys' name in the US, holding the Number 1 spot for the past seven years and also ranking as one of the most popular boys' names around the western world.

Lionel is one leonine name that hasn't taken off as cousins Leo and Leonardo have, though it did reenter the Top 1000 in 2010 after several years away; it was at its highest point in the 1920s and 1930s.

Lucian is a sleeker, more sophisticated version of Lucius that is climbing in tandem with other Lu-starting names.

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).

Almost as passé as Hyman.