Operation: Baby 2020 (Boy)

Jonas has a slightly more grandfatherly image than the English version of his name, but that only adds to its retro appeal. And though it may lag behind Jonah in this country, Jonas is riding a huge wave of popularity in Europe, where it ranks highly in Germany, Switzerland, Austria and Norway.

Used as a first name for a handful of girls every year, Joplin could be seen as a distant cousin of other -lin names, like Caitlin, Brooklyn and Braelynn. We think it works even better as a musical middle name possibility for fans of Janis... or Scott. Both great connections — albeit very different from one another.

Joshua, a Top 10 name from 1983 until 2010, has dropped out of the Top 50 but manages to present a relaxed, attractive image, with a bit of the Old West mixed in with its biblical persona.

Josiah—a biblical name with lots of quaint, old-fashioned charm—makes a much fresher sounding alternative to either Joseph or Joshua, combining the best of both. Josiah is among the several Biblical boys' names that have been on the rise this decade.

Cool and charming, with plenty of flair and sophistication, Julian manages to strike the balance between being a sensible classic and contemporary choice. Appealingly international, it is no wonder Julian is a rising star.

Jupiter's partner Juno has entered the mainstream, so it's possible that her divine mate could follow. But not necessarily for boys — Jupiter is currently mostly female in the US, thanks to its similarity to Juniper. Stars including Ed Sheeran and Ashley Tisdale recently welcomed daughters named Jupiter, which could shift the balance even more towards the girls.

More unusual than Justin, less word-like than Justice, this New Testament name could make an intriguing choice. After being off the popularity lists from 1904 to 1993, it is now being used in steady numbers.

While Keegan has been rising in popularity for a number of years, this variant spelling has dropped in the lists.

Kellan Lutz is the attractive young actor who plays Emmett Cullen in the Twilight series.

Kellen is German in origin and Irish in spirit. Kellen has fallen a bit in popularity for boys since its peak in 2012, but it has possibilities for girls too. In fact, Kellen's similarity to such feminine names as Helen, Ellen, and Kelly makes it feel more unisex or even female, though Twilight actor Kellan Lutz has done much to popularize this name for boys.

Although Kenton has the trendy K beginning and on ending, and a jazz reference to Stan Kenton, it still manages to sound stiff and old-fashioned.

Long popular in Ireland and England, Kieran, the name of Ireland's first-born saint and twenty-five other saints, has been building its U.S. fan base thanks to its strong and attractive sound, and its fashionable Irish brogue. While Ciaran is the more authentic Irish spelling, Kieran is more popular this side of the Atlantic.

Kingsley is a sophisticated Harry Potter name that entered the US Top 1000 in 2013.

Not as familiar and easy as Christopher, not as unusual and interesting as Christoph or Krzysztof.

Kyler was once a creative solution for 90s parents who enjoyed the sounds of Kyle and Tyler but didn't want to use anything so popular. Now a well-established name on the US charts, it is given to more than 1000 babies every year.

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.

Variation of Landon.

Landon is a popular surname name; it's been dropping slightly in recent years but has surpassed its once more popular rhyming cousin Brandon. For some it may bring back nostalgic memories of Little House on the Prairie 's understanding Pa, played by Michael Landon.

The additional syllable makes Lark a masculine surname name.