English Names in Portuguese: Why John Is João, James Is Tiago & More

Are English Names Really “Translated” Into Portuguese?

Sometimes—but translation is not always the best word.

Imagine that one ancient name spreads through Greek, Latin, Germanic languages, French, English, Spanish, Portuguese, and other languages over many centuries. Each community gradually changes its pronunciation and spelling. Centuries later, the descendants may look different even though they belong to the same historical family.

That is different from taking a living person named John Smith and deciding to call him João Smith. Modern personal names are normally preserved.

Ciberdúvidas notes that contemporary translation does not require foreign personal names to be automatically converted into a Portuguese equivalent simply because one exists. The traditional translation of certain historical, religious, and royal names belongs to a different convention.

45+ Common English and Portuguese Name Equivalents

The table below gives traditional or historical correspondences. It does not mean that you should rename a modern person.

Why John Becomes João

This is one of the easiest pairs to recognize visually, but the relationship is much older than English and Portuguese.

The Portuguese João and English John ultimately belong to the tradition of the Hebrew name commonly represented as Yohanan / Yehohanan. The name passed through Greek and Latin before developing different forms across European languages.

So João did not develop because someone looked at the English word John and translated it. Both languages inherited and reshaped an older international name tradition.

Why Does James Become Tiago? This Is the Fun One.

In an English New Testament, you can read about the brothers James and John, sons of Zebedee. In a standard Brazilian Portuguese translation of the same passage, they are Tiago e João. The contrast is visible directly in Matthew 4:21.

But James → Tiago is not a simple sound-by-sound transformation.

The family begins with the Hebrew name that also gives English Jacob and Portuguese Jacó. Through Greek, Latin, Late Latin, and medieval forms, different branches emerged. English developed James; Portuguese has forms including Jacó, Jaime, Iago, Tiago, and the compound Santiago in historically related traditions.

This is why a dictionary-style statement such as “James means Tiago” needs context. In the biblical and traditional naming convention, James the Apostle is Tiago. But:

And if a Brazilian parent names a child James, that child’s name is James—not automatically Tiago.

Why William Becomes Guilherme

William and Guilherme look much less similar than John and João, but they are historical cognates from the same Germanic name family associated with forms such as Wilhelm.

Different sound changes and medieval transmission produced very different-looking descendants across European languages:

Again, this does not mean Prince William becomes Príncipe Guilherme automatically in every modern Brazilian text. Historical-equivalent relationships and actual editorial naming conventions are separate questions.

Why Elizabeth Can Be Isabel or Elisabete

This is another good example of a name family branching in different directions.

Elizabeth, Elisabete, and Isabel belong to the same broader historical tradition rooted in the biblical name usually represented as Hebrew Elisheva. Portuguese ended up with more than one established form.

This is also why royal naming conventions can differ between varieties and editorial traditions. Portuguese sources have long discussed whether an English Elizabeth should be rendered as Isabel, Elisabete, or preserved as Elizabeth in a particular context.

Biblical Names: English and Brazilian Portuguese Side by Side

Biblical translation is one of the clearest places to see traditional name equivalents, because the same people appear in established English and Portuguese translations.

A direct James/Tiago example

Matthew 4:21 provides a clean side-by-side example:

That is why English speakers can encounter a Brazilian named Tiago and be surprised to learn that the familiar biblical counterpart in English is James.

Saints, Popes, Kings, and Historical Figures Follow Older Translation Traditions

Historically, European languages often localized the names of saints, popes, monarchs, and other major historical figures.

The Vatican itself illustrates the papal convention: its English pages use John Paul II, while Portuguese-language Vatican material uses João Paulo II; the Portuguese Vatican page for Pope Francis uses Francisco.

These traditional conventions explain why a historical text can translate a royal or religious name even though a contemporary celebrity’s name remains unchanged.

Why Modern People’s Names Usually Stay Unchanged

This is where learners should avoid overapplying the equivalence tables.

So if your Brazilian friend is named João, you do not need to call him John when speaking English. João is his name. Likewise, an American named John does not become João just because the conversation is in Portuguese.

Movies, Books, and Dubbing: Fictional Characters Can Change Much More

Fiction gives translators and localization teams more freedom because a character’s name may carry a joke, description, personality trait, animal reference, or cultural clue that would disappear if the English form were simply preserved.

This is the same basic logic behind localized movie titles: sometimes preserving the original is best; sometimes meaning and audience recognition matter more. See our article on movie titles in Brazil for the title side of the same phenomenon.

Famous character names that changed in Brazilian Portuguese

Official Disney Brazil material uses names such as Pateta, Pato Donald, Margarida, Sininho, Tio Patinhas, Grilo Falante, and João Honesto. These are not improvised fan translations; they are established Brazilian localizations.

The Seven Dwarfs are a perfect localization lesson

In English, Disney’s seven dwarfs are named after personality or physical traits:

Disney’s official U.S. page lists Doc, Sneezy, Grumpy, Happy, Bashful, Sleepy, and Dopey, while Disney Brazil lists Mestre, Atchim, Zangado, Feliz, Dengoso, Soneca, and Dunga. This is localization at work: the translator preserves what the name does in the story rather than mechanically preserving its spelling.

But Many Famous Characters Keep Their Original Names

Localization is selective.

This is why character localization is not governed by one formula. Translators consider brand identity, humor, age of the audience, established tradition, meaning, sound, and whether the name itself carries information.

Some English Names Simply Do Not Have a Useful Portuguese Equivalent

You should not force an “equivalent” for every English name.

Brazilian parents also use internationally borrowed names directly, sometimes with spelling adaptations and sometimes without them. A useful historical equivalent only exists when there is an actual naming tradition behind the comparison.

Curiosities That Make Name Equivalents Easier to Remember

How Should You Use These Equivalents as a Portuguese Learner?

1. Use them for recognition. Knowing that João corresponds historically to John helps with the Bible, history, saints, and international name families.
2. Do not rename living people. A person’s actual name takes priority over a traditional equivalent.
3. Learn biblical names in both languages. This makes books, films, church references, art, and cultural discussions much easier to follow.
4. Expect localization in children’s media and older franchises. Character names with transparent meanings are particularly likely to change.
5. Expect modern brands and celebrities to stay recognizable. Peter Pan, Harry Potter, James Bond, and contemporary actors generally keep their established identities.
6. Listen to Portuguese pronunciation even when the spelling stays English. An unchanged written name may still sound different inside a Brazilian sentence.

For the pronunciation side of this topic, see Why Brazilians Pronounce English Words Differently. For how full names, surnames, middle names, and documents work across the two cultures, see Brazilian vs. American Names and our Brazilian Portuguese Names Guide.

Frequently Asked Questions