Begins or Ends with O

Ozzy has been on the rise in recent years and currently sits in the Top 1000 in the UK and the US. The Ozzie spelling has yet to catch up, but has nevertheless gained more attention thanks to its popular counterpart. Given to 135 boys and to 50 girls in 2023, for every one Ozzie there are three Ozzys.

A popular Japanese name with an uplifting meaning, Kaito is connected to the air and the sea. Said with three syllables and not the two English speakers may expect, it has been borne by a number of Japanese footballers, along with several popular fictional characters, including Kaito Momota of Danganrompa, and the Vocaloid Kaito.

Italian, Portuguese and Spanish variation of Arthur that makes the original feel more romantic and dashing.

An energetic and friendly Italian classic, Carlo is popular in its native Italy, but also familiar across Spain, the Netherlands, Germany, the UK, France, and Brazil. A variation of the regal French and English classic Charles, it is ultimately derived from the Latin Carolus and the Germanic Karl, meaning "free man".

This classic yet poetic Italian name for boys, is a Top 50 choice in its native Italy, and has been climbing up the charts in the US and the UK too. It had sporadically made the US charts throughout the 20th century, but it has been consistently present since 2009.

Mime Marcel Marceau actually had two versions of the same name. Marcel, Marceau, Marcella, Marcus, Mark -- all are variation of the Roman mythological name Mars, the god of war.

Nature names like Ocean and River are flowing back into favor, especially with nature lovers and green-oriented parents. In 2024, it was given to 483 boys and 325 girls, making this a unisex favorite in the US, while in the UK, it is considerably more popular for girls.

Many may associate Mario with the popular platform game - unsurprising when it's the 5th best-selling video game worldwide, and was voted the 2nd best game ever by IGN in 2024. The titular plumber was apparently named after American businessman, Mario Segale, who rented a warehouse to Nintendo, and this in itself reflects that Mario is much more established than just a name for a video game character.

Massimo is a Latin charmer and while it might feel like a big name for a baby (or anyone, really), it has a touch of gentleness about it too, owing to the S sounds. A charismatic member of the Maximus/Magnus family, Massimo means "greatest" and has been a enduring favorite in Italy, where it has remained in the Top 100 over the last two decades

Osian is the easier-to-comprehend version of the ancient Irish Oisin, an important name in mythology. Osian or Oisin was a warrior poet. Osian is popular in modern Wales and England. While Oisin is pronounce oh-SHEEN, Osian is pronounced O-shan -- though we bet most Americans would just say ocean, which you may consider a good thing.

Aside from President Wilson (born Thomas), most Woodrows, including Herman, Guthrie, and Harrelson, have chosen to be known as Woody, which says it all.

Fiery sound and uplifting meaning, but it's also among the Top 100 dog names. Spelled Fiyero, it's the hero of the book and musical "Wicked."

Softer than Benedict, less popular than Benjamin, and bolder than Bennett, Puerto Rican actor Benicio Del Toro introduced this name to the American mainstream in the early 2000s, before which the name was hardly use. Popular in Argentina, Benicio debuted on the US Top 1000 in 2016, when it was the third-fastest-rising boys' name, and while it hasn't skyrocketed then, it remains comfortably in the charts.

Oak, a symbol of solidity, strength, and longevity, is joining Cedar and Pine as a viable name, one that would work especially well in the middle.

Paolo is an irresistibly lush Italian name for boys, worlds more romantic than its spare English equivalent.

Pablo, the commonly used Spanish version of Paul, has the added bonus of some fantastic artistic bearers: painter Picasso, cellist Casals, and poet Neruda. Pablo has been consistently in the US charts since records began, and has been within the Top 500 since the mid 60s. However, Pablo has never cracked the Top 200, making it familiar but not overused or tired.

Alvino is a masculine name with Italian and Spanish roots, derived from the Latin 'albus' meaning 'white' or 'bright.' It's a variation of Alvin, with the Italian/Spanish suffix giving it a more melodic quality. Alvino carries connotations of clarity, purity, and brightness. While relatively uncommon in the United States, the name has maintained steady usage in Hispanic and Italian communities. Historically, the name gained some recognition through Alvino Rey, a pioneer of electric guitar and big band music in the 20th century. Alvino offers parents a distinctive yet accessible option with a pleasant sound and positive meaning, blending classic origins with a slightly exotic feel for English speakers.

Alonso is the Spanish and Portuguese diminutive version of Alfonso, itself deriving from an old Germanic name "Adalfuns" meaning "noble and ready." Although the Italian spelling Alonzo is more popular in the US, Alonso has its own strong history.

Traditionally written with an accent (Álvaro), this is a well-used Spanish saint's name with a lot of flair that could definitely cross over to more general usage. It reached its peak in the United States in 1985, when it ranked Number 456. In Spain, Álvaro is a Top 20 boys' name.