Riley—an upbeat, friendly surname name—is red hot for girls and still going strong for boys. If you haven't been spending much time around babies recently, you may be surprised to learn that Riley is the most popular girls' name starting with R and also the Number 1 Irish name for girls in the US.

Vibrant, sassy, and bubbly, Ruby is a vintage gem that hasn't lost any of its sparkle. Currently popular in a number of English-speaking countries, Ruby is proof of the 100 Year Rule, trending again for the first time since its heyday in the 1910s.

Rosalie hit its apex in 1938 and then slid straight downhill until it fell off the U.S. Top 1000 completely in the 1980s, only to spring back to life in 2009 as the name of a character in the Twilight series. The beautiful vampire Rosalie Hale has breathed fresh life back into this mid-century name, and the fact that the character is both sympathetic and relatively minor means Rosalie has the chance to thrive again as a baby name without feeling unduly tied to Twilight.

Rose is derived from the Latin rosa, which referred to the flower. There is also evidence to suggest it was a Norman variation of the Germanic name Hrodohaidis, meaning "famous type," and also Hros, "horse". In Old English it was translated as Roese and Rohese.

Austrian actress Romy Schneider seemed to be the singular bearer of this international nickname name until it found new style currency in the past decade, entering the US Top 1000 for the first time ever in 2024.

Rosy-cheeked and cheery, Rosie (also spelled Rosy) has been standing on her own for many decades, back to the days of 1943 musical Sweet Rosie O'Grady. She's one of the perky nickname-names that are filling the popularity lists of other English-speaking countries. In the US, she came back to the Top 1000 in 2013, after a 30 year hiatus. In 2023, Rosie was one of the fastest rising girl names.

Rue has gone from Golden Girls actress to Hunger Games heroine to a fresh alternative to beloved middle name Rose. This botanical name is also a coincidental double word name, meaning "regret" in English and "street" in French. Despite these unfortunate secondary meanings, Rue has real potential to be one of the most popular new middle names for girls.

Stylish, gentle, and rustic at the same time, Rowan is a name that falls into various categories. Unisex and cool, mystical and woodsy, with the feel of both Rose and Riley, Rowan is a fresh but familiar choice.

Remi is an adorable name that's fashionable and keeps gaining momentum. Remi entered the US Top 1000 in 2013 and is now approaching the Top 100.

Rumi is a Japanese girl name, with a sweet yet substantial sound. Reminiscent of other popular choices in the West — think Ruby, Remy, and Romy — it is currently achieving more notice thanks to Beyonce and Jay-Z, who chose it for one of their daughters.

Rosalind has a distinguished literary history – used and popularized by Edmund Spenser and Shakespeare via one of his most charming heroines, in As You Like It. Along with a bouquet of other Rose names, Rosalind might be ready for a comeback.

Most of us had never heard this lovely Welsh name with links to the moon until we heard the 1976 smash hit Fleetwood Mac song of that name, with lyrics by Stevie Nicks. That same year it popped onto the U.S. Top 1000 at Number 593.

Rachel was derived from the Hebrew word rāchēl, meaning "ewe." In the Old Testament, Rachel was the favorite wife of Jacob, and mother of Joseph and Benjamin. International variations include the Spanish Raquel and Israeli Rahel.

Despite appearances, Rosemary is not a "smoosh" name, not even a traditional one. The name derives from two Latin terms "Ros" meaning ‘dew’ and "Marinus" "meaning "of the sea". The plant was termed ‘dew of the sea’ due to its salty texture and its ability to thrive in coastal climes. Only after the Middle Ages did the English names of Rose and Mary become interchanged with the name Rosmarinus and give us the modern name we use today.

Originally a surname deriving from the Roman twin Romulus, this attractive name was introduced to the English-speaking world as a first name by painter Augustus John who used it for his son. Romilly John became Admiral of the Fleet in England.

Rory is a buoyant, spirited name for a redhead with Celtic roots. The name Rory is getting more popular overall, but for the past few years has been trending decidedly toward the boys' side -- however, it's been rising to new heights for girls in recent years.

Widely used across Europe as a common baptismal name symbolizing spiritual rebirth, Renata, in this country it has an operatic image via Italian-born divas Renata Tebadi and Renata Scotti.

Roxy, also spelled Roxie, is one of those high-stepping showgal names with plenty of moxie, among the many sassy nickname names on the U.K. popularity list--currently Number 398.

A classic name with regal elegance--Queen Victoria, like other queens, had Regina appended to her name. She was a Top 100 name in the 1960s.

Most of the notable Rivers have been male, but this nature name certainly flows as well for a girl. The name River is still rising for both genders, with about 3500 baby boys receiving the name last year vs. 1900 baby girls.