Once you know whether a country takes a definite article, prepositions become almost mechanical. The single rule that governs the entire system is this: the country's article dictates the preposition. An article-bearing country contracts its preposition with the article (em + o Brasil → no Brasil); an article-less country leaves the preposition bare (em Cuba). Master that one idea and you can correctly say where you live, where you're from, and where you're going for every country on Earth.
The core logic: the article is the engine
English uses one flat preposition: in Brazil, in Portugal, in Cuba — the country name never changes shape, and the preposition never contracts. Portuguese does something English speakers have no instinct for: it fuses the preposition with the country's article into a single word. So the question "which preposition?" is really the question "does this country have an article, and which one?"
This fusion is not optional or stylistic — it is grammatically obligatory. Portuguese never lets the sequence em o or de a surface as two separate words the way English keeps "in the" apart; they always collapse into no and da. This is the same machinery that gives you no carro (in the car) and da casa (of the house); countries simply feed their article into it. So the moment you decide a country has, say, the feminine article a, you have already decided that "in" will be na, "from" will be da, and "to" (with a) will be à. There is nothing further to choose. The entire difficulty of country prepositions therefore reduces to one upstream question — what is the country's article? — and everything downstream is automatic contraction.
- em + o → no (masculine)
- em + a → na (feminine)
- em + os → nos (masculine plural)
- em + as → nas (feminine plural)
- article-less country → bare em
Moro no Brasil.
I live in Brazil. (o Brasil → no)
Estudei na França por um ano.
I studied in France for a year. (a França → na)
Eles trabalham nos Estados Unidos.
They work in the United States. (os Estados Unidos → nos)
Nasci em Portugal, mas cresci em Cuba.
I was born in Portugal but grew up in Cuba. (no article → bare em)
Location: em / no / na / nos
Use this set for "in" — where something is, where you live, where you're staying. It is the most frequent of the three systems.
A minha família mora no México e na Colômbia.
My family lives in Mexico and in Colombia.
Faz muito frio no Canadá no inverno.
It's very cold in Canada in the winter.
Ela passou seis meses na Índia e depois em Israel.
She spent six months in India and then in Israel.
Origin: de / do / da / dos
To say where someone or something is from, use de. Again the article triggers a contraction: de + o → do, de + a → da, de + os → dos. Article-less countries keep the bare de.
Sou do Brasil, e você?
I'm from Brazil — and you?
Ele é do México e a esposa é da Argentina.
He's from Mexico and his wife is from Argentina.
Esse vinho é de Portugal e aquele queijo é de Cuba.
This wine is from Portugal and that cheese is from Cuba.
Recebi uma encomenda dos Estados Unidos.
I received a package from the United States.
Notice the clean contrast: sou do México (article country) versus sou de Angola (article-less). Same meaning, different surface form, all driven by the article.
A subtlety worth flagging: de is also the word that links a noun to its country of origin, exactly like English "from" in the wine from Chile. There too the contraction applies — o vinho do Chile, a música de Cuba. English speakers sometimes try to map "from" onto a single fixed Portuguese word and then get tripped up when de turns into do, da, or dos. Remember it is still just de; the article is what changed its shape.
O café do Brasil é exportado para o mundo todo.
Coffee from Brazil is exported all over the world.
A delegação dos Estados Unidos chegou ontem.
The delegation from the United States arrived yesterday.
Destination: para / pro / pra (and ir a / para)
To say where you're going, Brazilian Portuguese overwhelmingly uses para, which in speech contracts with the article: para + o → pro, para + a → pra. With article-less countries it stays para + bare name. The contractions pro/pra are extremely common in speech and informal writing but are written out as para o / para a in formal registers.
Vou pro Japão em julho.
I'm going to Japan in July. (informal: para o → pro)
Ela se mudou pra França no ano passado.
She moved to France last year. (informal: para a → pra)
Mudei-me para a Argentina por motivos de trabalho.
I moved to Argentina for work reasons. (formal: written out)
No próximo mês viajo para Cuba.
Next month I'm traveling to Cuba. (no article → bare para)
ir a versus ir para
Both ir a and ir para mean "to go to," but there is a nuance Brazilians feel even if they rarely state it: ir a suggests a shorter or round-trip visit, while ir para suggests going to stay, to settle, or for a longer haul. The preposition a contracts too: a + o → ao, a + a → à (with the grave accent, the crase).
Vou ao Chile a trabalho — volto na sexta.
I'm going to Chile for work — I'll be back Friday. (short trip → ir a)
Eles foram para o Canadá e não pretendem voltar.
They went to Canada and don't plan to come back. (settling → ir para)
Fomos à França de férias.
We went to France on vacation. (a + a → à, with crase)
Cities behave differently
Most cities take no article, so they use a bare em — em São Paulo, em Lisboa, em Tóquio, em Paris. The famous exception is o Rio de Janeiro, which keeps its article and therefore contracts: no Rio. A few others carry articles too (o Porto, o Cairo, o Recife for some speakers), but for everyday purposes treat cities as bare-em with o Rio as the one you must remember.
Why are cities mostly article-less while countries mostly take one? Largely because city names tend to be opaque proper nouns with no everyday-noun feel, whereas country names so often grew out of common nouns (regions, rivers, features). Rio de Janeiro is the giveaway: rio literally means "river," so the name still reads as "the river of January," and the article rides along — hence no Rio, do Rio, pro Rio. The same shows up with o Recife (a recife is a reef) and o Porto (a porto is a harbor). So the article on a city is a clue that the name was once a common noun. When in doubt with a city, default to bare em, and reserve the contraction for the small set of "former common noun" names.
Nasci no Recife, mas hoje moro em Curitiba.
I was born in Recife, but today I live in Curitiba.
O voo do Rio para Lisboa leva umas nove horas.
The flight from Rio to Lisbon takes about nine hours.
Moro em São Paulo, mas trabalho no Rio.
I live in São Paulo but work in Rio.
Eles se conheceram em Paris e casaram em Lisboa.
They met in Paris and got married in Lisbon.
Cresci no Rio de Janeiro e me mudei pra Salvador depois.
I grew up in Rio de Janeiro and moved to Salvador afterwards.
Putting it all together
Here is the same country in all three systems so you can see the article threading through every form:
| Country | Location (in) | Origin (from) | Destination (to, informal) |
|---|---|---|---|
| o Brasil | no Brasil | do Brasil | pro Brasil |
| a França | na França | da França | pra França |
| os Estados Unidos | nos EUA | dos EUA | pros EUA |
| Portugal (no article) | em Portugal | de Portugal | para Portugal |
| Cuba (no article) | em Cuba | de Cuba | para Cuba |
Common Mistakes
❌ Sou de Brasil.
Incorrect — Brasil has an article, so de + o → do
✅ Sou do Brasil.
I'm from Brazil.
❌ Moro na Portugal.
Incorrect — Portugal takes no article; the em stays bare, and Portugal isn't feminine here anyway
✅ Moro em Portugal.
I live in Portugal.
❌ Vou para o Cuba.
Incorrect — Cuba is article-less, so no contraction
✅ Vou para Cuba.
I'm going to Cuba.
❌ Eles vivem em Estados Unidos.
Incorrect — plural article required: em + os → nos
✅ Eles vivem nos Estados Unidos.
They live in the United States.
❌ Fui a a França.
Incorrect — a + a contracts to à (crase)
✅ Fui à França.
I went to France.
Key Takeaways
- The country's article drives every preposition; learn the article, not the preposition.
- Location: em → no / na / nos (article country) vs bare em (Portugal, Cuba).
- Origin: de → do / da / dos (article country) vs bare de (de Angola, de Cuba).
- Destination: para → pro / pra in speech; ir a → ao / à for shorter trips and formal writing.
- Cities mostly take bare em (em São Paulo), with o Rio as the exception you must remember (no Rio).
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Start learning Portuguese→Related Topics
- Countries and Nationalities: OverviewA1 — How country names in Brazilian Portuguese lexically take (or drop) the definite article, how that choice drives the preposition, and how nationalities and languages stay lowercase.
- Articles with Country NamesA2 — Which countries take a definite article in Brazilian Portuguese (o Brasil, a França, os Estados Unidos) and which don't (Portugal, Cuba, Israel) — a lexical split you must memorize, and how it drives the no/na/em contractions.
- Prepositions of PlaceA1 — The Brazilian Portuguese system for location — em (na/no) as the workhorse, plus a, de, entre, sobre/sob and the compound set (em cima de, atrás de, perto de) — and the unpredictable country-article quirk: no Brasil but em Portugal.
- Countries in the AmericasA2 — Which American countries take a definite article in Brazilian Portuguese, the gender of each, the prepositions they trigger (no Brasil, nos EUA, em Cuba), and their demonyms.
- European CountriesA2 — European country names in Brazilian Portuguese: their articles and genders, the prepositions they trigger (na França, em Portugal), and their demonyms like francês/francesa.