One Syllable Names for Boys

Niel is a masculine name that serves as a variant spelling of Neil or Neal. It has ancient Celtic origins, derived from the Irish name Niall, which possibly means "champion" or "cloud." This concise name carries historical significance through figures like Niall of the Nine Hostages, a legendary Irish high king. The spelling variant Niel is less common than Neil but maintains the same strong, clear sound. Popular throughout Scotland, Ireland, and other English-speaking countries, this name has endured for centuries while remaining relatively uncommon. Niel offers simplicity with meaningful heritage, making it appealing to parents seeking a traditional name that's straightforward yet distinctive. Its brevity allows it to pair well with various middle names and surnames.

Niel

An ubercool and mysterious name, brought to you by director M. Night Shyamalan. 

Night

Short, simple international names like this make distinctive middle name possibilities. Nir also makes for a nature-oriented first name that's both straightforward and unusual. But be prepared for a lifetime of "...and far" jokes.

This sophisticated French name was used last year in the US for about ten baby boys and twice as many girls. We can see it having a much bigger future.

Noir

A lot of attention was drawn to this name when Kim Kardashian and Kanye West announced it as the name of their baby daughter, making it instantly unisex.
 North is a word name that's long been used, albeit very quietly, a name with a certain purity and strength. It's a good choice if you're from, say, Wisconsin or Maine, love winter or are an avid skier, or if you just want a name that's both very familiar and very unusual.
 North is just one of several cool names with a directional slant-others are West, Weston, and Easton.
 A young Elijah Wood played the title character in the 1994 film North.

North

Phong

Piers was the first version of Peter to reach the English-speaking world, via the Normans, but it's never made it in the US, despite its large measure of understated panache. This might change due to the high visibility of TV personality and former news editor Piers Morgan.
 There's a famous satirical medieval poem called Piers Plowman, in which the title character symbolizes the virtues of honesty and industry. Piers Whiteoak is a main character in the sixteen-book series Jalna by Canadian author Mazo de la Roche; Piers Polkiss is the best friend of Harry's cousin Dudley in the Harry Potter books.
 The surname form of the name, Pierce, is better known in the U.S., partly via actor Pierce Brosnan.

Piers

Rae as a masculine name has Scottish and Hebrew origins. It derives from the Scottish surname Rae, meaning "grace" or "deer," or it may be a shortened form of Raymond, meaning "wise protector." In Hebrew contexts, it could be related to the word "ra'eh" meaning "friend" or "companion." Though more commonly used for girls in recent decades, Rae has a history as a male name, particularly as a middle name or nickname. Its single-syllable simplicity gives it a strong, straightforward quality appreciated by parents looking for a minimalist name option. The name carries a gentle yet masculine energy and works well in combination with longer first names. As a standalone male name, Rae remains relatively uncommon, giving it a distinctive quality.

Raf is a raffish short form that many a cool boy would love to call his own.

Rexx

Rhode

Rives

Roane

The version of Rob used in George R.R. Martin's A Song of Ice and Fire books and HBO's Game of Thrones.

Robb

Rowan meets Joey in this nickname-y style choice, and it may well be a modern creation, blending the classic nickname for Joseph with the contemporary favorite Ro- sound. However, Roey may have more history than that, even if it did only begin appearing in the US charts in the late 90s.
 
It could be considered a variation of the Hebrew name, Roi, meaning "my Shepherd", or the identically spelled Galician and Spanish name Roi, a diminutive of Roderigo ("famous ruler"). 
 
Used exclusively for boys so far, with 11 given the name in a recent year (double the number given in previous years), if viewed as a modern invention, it could easily cross into unisex territory.

Roey

Like Papa name Rudolf, Rolf never quite emigrated from the Bavarian Alps.  You might want to move on to Rollo or Wolf.