Names Ending in O for Boys

Leopoldo is a masculine name with noble Germanic origins, being the Italian and Spanish form of Leopold. The name combines the elements 'leud' meaning 'people' and 'bald' meaning 'bold,' essentially translating to 'bold people' or 'brave people.' Leopoldo has been borne by numerous European royalty and nobles throughout history, giving it an aristocratic flair. While uncommon in English-speaking countries, it remains a classic choice in Hispanic and Italian communities. The name carries a certain dignity and strength, with its flowing four syllables creating a melodious yet distinguished sound. Parents might choose Leopoldo for its international appeal, historical connections, or to honor Hispanic or Italian heritage while providing their child with a name that feels both traditional and distinctive.

Leopoldo

Juanpablo is a masculine compound name combining the Spanish names Juan (John) and Pablo (Paul), two of Christianity's most significant apostles. While traditionally written as two separate names (Juan Pablo), the compound version has gained popularity, especially in Latin American countries. Juan derives from Hebrew, meaning 'God is gracious,' while Pablo comes from Latin, meaning 'small' or 'humble.' The name reflects the strong Catholic heritage of Spanish-speaking regions, honoring two important saints. Juanpablo emerged more prominently in the late 20th century, possibly influenced by Pope John Paul II (Juan Pablo II in Spanish). The name carries connotations of faith, strength, and cultural pride, and is particularly popular in Mexico, Colombia, and other Latin American countries.

Juanpablo

Kamilo is a masculine name with multiple cultural connections. It's a variation of Camilo (Spanish and Portuguese) or Kamil (Arabic, Turkish, and Slavic), ultimately deriving from the Latin 'Camillus.' In Arabic origins, Kamil means 'perfect' or 'complete,' while the Latin root suggests 'noble-born' or 'attendant in religious ceremonies.' The spelling with a 'K' gives the name a more distinctive and modern appearance compared to the traditional 'C' spelling. Kamilo has a rhythmic quality with its three syllables and balanced sound. While not among the most common names internationally, it enjoys moderate use in diverse cultures. The name offers cross-cultural appeal, combining historical depth with contemporary style.

Kamilo

One of the fastest-rising <a href="https://nameberry.com/boys-names">boys names</a> of 2017, Miliano can be seen as a cross between trendy unisex place name Milan and the whole Maximiliano/Emiliano family.

Miliano

Japanese name common among older generations.

Akio

Saint John Bosco is well-known to Catholic School children, but Bosco is perhaps better known as a chocolate syrup.

Bosco

Khylo

Marciano is a masculine name with Latin and Italian origins, derived from Marcus or Mars, the Roman god of war. The name literally means 'belonging to Mars' or 'of Mars,' carrying connotations of strength, vigor, and masculine energy. Popular in Italy, Spain, and Latin American countries, Marciano combines classical roots with a melodious quality typical of Romance languages. The name gained international recognition through Rocky Marciano, the undefeated heavyweight boxing champion of the 1950s. While maintaining strong traditional roots, the name has a distinctive quality that sets it apart from more common derivatives of Marcus. Marciano offers families a name with historical depth, cultural richness, and a strong masculine presence while still having a certain musical flow to its pronunciation.

Marciano

Is Zyro a respelling of Zero or a play on Kyro, inspired by the likes of Zyon or Zyaire? Could it even be a form of Ziro, the Basque form of Cyrus? Whichever way you view it, it has been appearing in the US stats since 2024 and was given to 37 babies in a recent year.

Zyro

The name of four popes and several saints: a promising Italian import. 

Eugenio

Joyful-sounding name that makes a really original option.

Caio

Karmello is a modern masculine name that appears to be a creative variation of Carmelo, with the substitution of 'K' for 'C' giving it a contemporary edge. The original name Carmelo has Italian and Spanish roots, derived from Mount Carmel in Israel, which has religious significance in Christianity. Karmello has a melodic quality with its three syllables and pleasing ending sound. While still uncommon, the name offers a blend of traditional resonance and modern styling. Its similarity to the word 'caramel' may evoke associations with sweetness and warmth. Parents might choose Karmello seeking a name that sounds familiar yet stands out, combining multicultural appeal with distinctive spelling.

Karmello

Artemio gives energy to this august Greek mythological name.

Artemio

Neko is a masculine name with multicultural origins and meanings. In Japanese, "neko" means "cat," symbolizing independence, mystery, and grace in Japanese culture. The name also exists in African traditions, particularly in Nigeria, where it can mean "gift from God" or "time" in certain dialects. This cultural versatility makes Neko appealing to diverse families. While uncommon in Western countries, the name has gained some recognition through Japanese animation and pop culture. Neko's brevity and distinctive sound make it memorable, while its soft consonants create a gentle yet strong impression. For parents seeking a concise, meaningful name that works well internationally and carries positive associations across cultures, Neko offers a compelling choice.

Neko

While Faust, who sold his soul to the devil, was anything but fortunate, this Latinate variation is more commonly heard and accepted.

Fausto

Gabino is a masculine name with Spanish and Italian origins, derived from the Latin name 'Gabinus,' which referred to someone from the ancient Italian city of Gabii near Rome. The name carries historical significance as it is associated with Saint Gabinus, a Roman martyr and priest who lived in the 3rd century. Gabino has remained consistently used in Spanish-speaking countries, particularly in Mexico and parts of Latin America, though it's not among the most common names. It has a melodic quality with its balanced syllables and warm vowel sounds. Gabino conveys a sense of tradition and dignity while remaining distinctive. The name often suggests a strong cultural heritage and connection to Hispanic or Italian roots.

Gabino

This name of a renowned Apache leader and mystic would be a difficult choice, since it was used as a rallying cry in so many old westerns and by paratroopers jumping out of their planes in World War II. 

Geronimo

Kaido is a masculine name with Japanese origins, though it may also appear in other cultures. In Japanese, depending on the kanji characters used, it can have various meanings including 'ocean way,' 'way of the sea,' or 'open road.' The name possesses a strong, distinctive sound that travels well across cultural boundaries. While not common in global naming statistics, Kaido has gained some recognition through Japanese anime and manga characters. Parents might be drawn to this name for its exotic feel, simple pronunciation, and connection to Japanese culture. The name's association with paths and journeys can symbolize life's adventure, making it appealing for parents seeking a name with depth and distinctive character.

Kaido

The Hungarian classic Laszlo, with its zippy 'z' middle and energetic 'o' ending, has become something of a hipster option, beginning to be considered by cutting-edge parents.
 
A name with a royal heritage in its native country in the Ladislaus form, it is still among the top Hungarian names for boys. In Hungary, Laszlo is pronounced with a soft S sound.
 
Laszlo is probably most familiar to Americans via the noble Paul Henreid character in Casablanca, who was Czech. There have been other fictional Laszlos in Real Genius and the Doctor Who series, and Laszlo is the name of the Ralph Fiennes character in The English Patient.
 
Real life namesakes include painter Moholy-Nagy and acclaimed cinematographer Kovacs. Two well-known actors who were born with the name Laszlo are Peter Lorre and Leslie Howard.
 
The spelling of the name is sometimes streamlined to Lazlo.

Laszlo

Bento is a diminutive of Benedito, meaning "blessed" or "well spoken of". Popular in Brazil and used as a given name, a nickname, and a surname, the name Bento is not to be confused with the Japanese concept of Bento, a single portion, convenience meal, often eaten at lunchtime. 

Bento

Boy names ending in O offer many intriguing options, from such top names as Theo to unique O-ending names from Kylo to Zino.

Mateo is the most popular boy name ending with O

 right now, though there are nearly 100 O-ending boy names among the US Top 1000. Along with Mateo, other boy names in the US Top 1000 include Leo, Santiago, Diego, Romeo, and Antonio.

unique names for boys that end with the letter O

 worthy of your consideration. These range from the biblical Jethro to the ancient Greek Cosmo to the cool, modern Rio and Po.



Here are all Nameberry’s boy names that end with the letter O, ordered by their current popularity on Nameberry.

Baby boy Names ending in the letter O, with meanings, origins, and popularity, including top boy names that end in O such as Milo and Kylo along with unique O-ending names such as Quinto. (Page 12)

1770+ Boy Names Ending in O