Declan is the Anglicized form of the Irish name Deaglán. St. Declan was one of the first missionaries to bring Christianity to Ireland, preceding St. Patrick. Originally from Wales, he founded the monastery of Ardmore in Ireland.

Melodic and lively, Delilah has cut itself (mostly) free from its treacherous past to become a contemporary favorite.

Though closely associated with the great medieval Florentine poet Dante Alighieri -- who's so famous most people skip the last name -- it's not as much of a one-man name as you might think. Heck, it's not even a one-poet name, thanks to British pre-Rapahaelite Dante Gabriel Rosetti. Though especially well used in the Italian-American community, it would make a striking name for any little boy.

David is an enduring worldwide classic, used from ancient times to the present day.

Daniel is one of only a handful of male names that sounds both classic and modern, strong yet approachable, and popular but not cliched. It also has a solid Old Testament pedigree. The only real downside: There are about 10,000 Daniels named each year, making it a less than distinctive choice.

Dominic comes from the Latin name Dominicus and is common in the Roman-Catholic community. In the past it has been given to boys born on Sunday—the word "Sunday" in languages including Spanish and French shares Dominic’s roots. In use in the English-speaking world since medieval times, its most famous bearer was St. Dominic, founder of the Dominican order of monks in the thirteenth century.

Daisy, fresh, wholesome, and energetic, is one of the flower names that burst back into bloom after a century's hibernation. In 2024, it burst back into the Top 100 for the first time since 1908.

Dylan still feels poetic and romantic after years of popularity. It still ranks highly on the charts, among the top boy names starting with D, so if you choose it, be aware that yours may not be the only Dylan in his class.

Dean may sound to some like a retro surfer boy name, but it is once again climbing up the popularity chart in the USA. For decades it was associated with Dean (born Dino) Martin; more recent representatives include Dean Cain, Dean McDermott and Dean Koontz -- not to mention Jared Padalecki's dreamy Dean Forester in Gilmore Girls.

One of the flower names, used occasionally in Britain (where it's pronounced DAY-lee-a). It seems to have recovered from what was perceived as a slightly affected la-di-dah air. The flower was named in honor of the pioneering Swedish botanist Andreas Dahl, which means dale.

Diana, the tragic British princess, inspired many fashions, but strangely, not one for her name. For us, Diana is a gorgeous and still-underused choice.

Dawson was scarcely heard as a first name before the debut of Dawson's Creek in 1998, at which point it leaped up more than 550 places in one year. The character Dawson Leery, played by James Van Der Beek, was a teen favorite until the show's demise in 2003.

Although it has come to sound Irish, Dennis is one of the most widely-used French names (St. Denis is the patron saint of France) and harks back even further to Dionysius, the Greek god of wine and debauchery. It was introduced to England by the Normans.

Drew, which projects a polished, somewhat intellectual impression, is rapidly becoming the Andrew nickname of choice, replacing the past favorite, Andy. It is fully capable of standing on its own, which it has for many decades, non-stop since 1942.

Delaney has been a popular surname-style choice since 90s, when it joined other Irish surnames such as Cassidy, Kennedy, and Mallory on the US Charts. Buoyant, bright, and cheerful, it ranks in the US Top 250 and is given to nearly 1300 babies every year.

While John Wayne and Duke Ellington are worthy role models, the reason Duke is currently enjoying a revival and returned to the Top 1000 in 2013 as one of the year's fastest-rising boys’ names is more likely due to the name given to high-profile TV couple Giuliana and Bill Rancic. Christened Edward Duke, he has always been called by his middle name, just as Edward Duke Ellington was. Duke is just one of several aristocratic titles being increasingly used by ordinary citizens.

Douglas, and more particularly its nickname, Doug, had a real romantic swagger in the 1950s and 1960s dating back to swashbuckling Douglas Fairbanks, but today is more likely to conjure up your mom's prom date. Originally a Celtic river name, it became attached to a powerful Scottish clan, renowned for their strength and courage. In its earliest incarnation, Douglas was used equally for girls and boys.

Duncan is jaunty, confident, and open, a Scottish royal name that's brimming with friendly charm and makes it into our golden circle of names that are neither too popular nor too strange. Popularity aside, Duncan is one of the most classic Scottish names for boys.

Converting Damian to Damien – or Julian to Julien or Lucian to Lucien – adds a certain je ne sais quoi to names. But most people in English speaking areas will still pronounce this the same as the -an ending form. The French pronunciation is more like "dah-mee-u(n)".

Derek started out as a sophisticated Brit, but the name became so common over the last decades of the twentieth century that it lost much of its English accent, along with its stylish edge. Derek was a Top 100 name in the U.S. for 25 years, from 1970 to 1995, after which it began to decline.