Brazilian boy names
Brazil does not use Portugal’s list. It writes Davi where Lisbon writes David and Matheus where Lisbon writes Mateus, it says the same words in a noticeably different accent, and beside the Portuguese stock it keeps a second one that Portugal never had: Cauã, Kauê, Guaraci and Moacir come out of Tupi. This page lists what Brazilian boys are called. Portuguese names covers Portugal itself — its kings, its navigators, its spellings — and the origins index has everywhere else.
Brazilian favourites that also rank in the U.S. top 100
Six names near the top of Brazil's birth registries that also hold places in the SSA's 2025 American top 100. The overlap is inheritance rather than influence — both countries took these from Latin, Hebrew and the church — but it makes them the easiest Brazilian names for an American ear.
- #10LucasLOO-kusLatin
Man from Lucania, though the association with lux, light, is the one everybody makes. In Brazil it defined a whole generation of the 1990s and 2000s.
- #37GabrielGAY-bree-ulHebrew
God is my strength. Said gah-bree-EW in most of Brazil, where a final l turns into a w — one of the first things an English speaker notices.
- #50Thiagotee-AH-goPortuguese
The meaning of James. Thiago is the Brazilian spelling and Tiago the Portuguese one, and it is the Brazilian h that made the American top 100.
- #72EnzoEN-zohItalian
Disputed — the tail end of Lorenzo and Vincenzo, or a route through German Heinz. São Paulo's Italian immigration is why this reads as Brazilian at all.
- #87ArthurAR-thurBrittonic
Traditionally glossed as bear, though the origin is genuinely disputed. Brazilians say ar-TOOR, and it has spent the last decade among the country's most-registered boys' names.
- #91Leonardolay-oh-NAR-dohItalian
Lion-strong. Ordinary across Brazil, where it shortens to Leo and Léo and nobody hears the painter.
Traditional names
The Portuguese layer: the names that came with the colony and the church and never left. Listen to the endings, because they are the giveaway. Brazilian Portuguese keeps unstressed vowels full where Portugal swallows them, and a final -o becomes an oo — Pedro is PEH-droo, Bernardo is ber-NAR-doo.
- Joãozhoo-OWNGPortuguese
Yahweh is gracious. The Portuguese John, and one of the hardest names in the language for an outsider: the ão is a nasal diphthong with no English equivalent.
- PedroPEH-drooPortuguese
Rock. Two emperors of Brazil bore it, and the second, Pedro II, ruled for fifty-eight years and was deposed in 1889.
- Miguelmee-GEWPortuguese
Who is like God? A question borrowed from the archangel. In Brazil the final l goes to a w, so it lands closer to mee-GEW than mee-GEL.
- Antonioan-TOH-nyohSpanish & Italian
A Roman family name of unknown, probably Etruscan, sense. Brazil writes it Antônio with the circumflex; Portugal writes António with the acute.
- Bernardober-NAR-dooPortuguese
Brave as a bear — bear plus hardy, both Germanic. A steady presence near the top of the Brazilian registries in the last decade.
- Henriqueen-REE-kuhPortuguese
Ruler of the home. The h is silent, and Henrique the Navigator is the reason the name reads as maritime in Portuguese.
- Guilhermegee-LYAIR-muhPortuguese
Resolute protector — the Portuguese William. The lh is one sound, the palatal l of Spanish llave and Italian figlio.
- Joaquimzhwa-KEENGPortuguese
Raised up by Yahweh. Tradition gives the name to the father of the Virgin, and Brazil gives it to Tiradentes, whose full name was Joaquim José da Silva Xavier.
- Vicentevee-SEN-cheePortuguese
Conquering, prevailing. São Vicente, founded in 1532, was the first permanent Portuguese town in Brazil.
- BentoBEN-tooPortuguese
Blessed; well spoken of. The Portuguese Benedict, worn short by ordinary use rather than clipped as a nickname.
- Tiagochee-AH-gooPortuguese
The meaning of James, broken out of Santiago by pilgrims cutting the word in the wrong place. The plain spelling now reads as European in Brazil.
- Felipefeh-LEE-peePortuguese
Lover of horses. Portugal writes Filipe; Brazil writes Felipe, and the two spellings have quietly become national markers.
The Tupi layer
Tupi was the coastal language the Portuguese met in 1500, and its descendant Nheengatu was a working lingua franca of colonial Brazil for two centuries. These names come out of it, and most are current rather than antique: Cauã and Kauê have been steady registry names since the late 1990s. The k in Kauê is worth a note — K, W and Y sat outside the official Portuguese alphabet until the 1990 Orthographic Agreement, with proper names as the standing exception.
- Cauãka-WANBrazilian
Hawk, falcon — from Tupi akauã, the laughing falcon, a snake-hunting raptor Brazilians still call the acauã. The final ã is nasal, not a vowel plus n.
- Kauêka-WEHBrazilian
The same Tupi bird word as Cauã with an open ending. The pair are common enough together that Brazilian twins get one each.
- Guaracigwa-ra-SEEBrazilian
The sun, from Old Tupi kûarasy. In the cosmology recorded by the chroniclers Guaraci the sun pairs with Jaci the moon and Tupã the thunder.
- Moacirmo-ah-SEERBrazilian
Son of pain — a name with an author. José de Alencar coined it from Tupi roots for the half-indigenous child in his novel Iracema (1865) and glossed it himself.
- Ubirajaraoo-bee-rah-ZHAH-rahTupi
Lord of the spear, from ybyrá (shaft) and îara (lord). Alencar again, in 1874; more a rank than a name, and rare in Brazil today, though the short form Bira is not.
Spelled the Brazilian way
Three names where the spelling itself is the nationality. None of the differences changes the sound; they are flags.
- Davidah-VEEBrazilian
Beloved. Portugal and the Spanish-speaking world write David; Brazil dropped the final consonant its phonology dislikes, and Davi has been one of its most-registered names for years.
- Matheusma-TAY-oosBrazilian
Gift of God. The h does no phonetic work at all — but it is the Greek theta of Matthaios showing through, which makes the Brazilian spelling the older one and Portugal's Mateus the modernised one.
- VitorVEE-tohBrazilian
Conqueror, from Latin victor. Brazil writes Vitor, Portugal writes Vítor with the acute, and both countries also use Victor with the c.
More Brazilian regulars
Ordinary names in Brazil that an American reader will mostly be meeting for the first time.
- Heitoray-TORBrazilian
Holding fast — Troy's defender, worn down into Portuguese. Near the top of the Brazilian registries for the last ten years and barely known outside them.
- CaioKAI-ooBrazilian
The Portuguese Gaius, commonest of the Roman first names and of genuinely unknown meaning. The gaudere gloss you will see quoted is old folk etymology.
- Iagoee-AH-gooBrazilian
The older half of the name that later split into Tiago and Santiago. Galician-Portuguese, current in Brazil, and yes, also Othello's ensign.
- Murilomoo-REE-looBrazilian
From the Spanish surname Murillo, usually read as “little wall”. Brazil took the Sevillian painter's name off the gallery label and put it on children.
- Leandrolay-AHN-drooBrazilian
Lion-man, from Greek. The Leander who swam the Hellespont nightly for Hero, and drowned; Brazil uses it without the tragedy attached.
- Gustavogoos-TAH-vooBrazilian
Traditionally read as staff of the Geats, though the etymology is genuinely disputed. A Swedish royal name that nineteenth-century Latin America adopted out of literary fashion.
How Brazilian naming works
Start with the spellings, because they are the fastest way to tell a Brazilian name from a Portuguese one. Brazil writes Matheus, Thiago and Thales with an ornamental h that changes nothing about the sound and everything about where the name is from; it writes Davi without the final d and Felipe where Portugal writes Filipe. Registration is civil and notably permissive: Brazilian registrars accept spellings a European office would send back, which is how Kauã, Kauan and Kaique all coexist with Kauê. K, W and Y were formally outside the Portuguese alphabet until the 1990 Orthographic Agreement, and proper names were always the exception that let them in.
Then there is the accent, which is not a minor variation on Lisbon. European Portuguese squeezes unstressed vowels almost out of existence; Brazilian Portuguese keeps them, which is why Brazilians are far easier to understand for anyone who has studied Spanish. Final -o becomes oo and final -e becomes ee, so Bernardo ends ber-NAR-doo and Vicente ends vee-SEN-chee. That last syllable also shows the most Brazilian sound of all: before an i vowel, d and t turn into j and ch, so Tiago is chee-AH-goo. A final l becomes w, giving Miguel as mee-GEW, and a final r thins to a breath, so Vitor is closer to VEE-toh. Carioca speech adds one more: in Rio a syllable-final s is a sh, which turns Matheus into ma-TAY-oosh.