Spanish has at least eight different relative pronouns — que, quien, quienes, el que / la que / los que / las que, el cual / la cual / los cuales / las cuales, cuyo, donde, cuando, como — and they are not interchangeable. The good news is that one of them, que, covers about 80% of all real cases. The bad news is that the remaining 20% is exactly where learners freeze: after prepositions, in non-restrictive clauses, when you mean "whose," when the antecedent is a place. This page walks you through the decision logic so you can pick the right pronoun without thinking, and so you understand why Spanish requires a different form when English would just say that or which.
The detail pages cover each pronoun in full — what this page does is give you the flowchart so you know which detail page to reach for.
The single most important distinction: restrictive vs non-restrictive
Before you choose a pronoun, you have to identify what kind of relative clause you're building. The choice is invisible in spoken English (we punctuate the same way we speak), but it controls everything in Spanish.
- Restrictive (specifying) clause — narrows down which one. The book that I bought (which book? the one I bought). No commas. Que is almost always fine.
- Non-restrictive (parenthetical) clause — adds extra information about an already-identified noun. My brother, who lives in Madrid, is a doctor (you already know which brother; the clause is extra colour). Commas around the clause. Que often still works, but quien and el cual become available, and after prepositions you generally cannot use bare que.
El chico que vive arriba es mi primo.
The boy who lives upstairs is my cousin. — Restrictive: identifies which boy. No commas. Que.
Mi hermano, que vive en Madrid, es médico.
My brother, who lives in Madrid, is a doctor. — Non-restrictive: extra information. Commas. Que still works, but quien is also possible.
The hierarchy: que → el que → el cual
Spanish has a three-step register ladder for the main relative pronoun, climbing from everyday speech to formal writing:
| Form | Register | Where it lives |
|---|---|---|
| que | neutral, the default | everywhere: speech, journalism, fiction, academic prose |
| el que / la que / los que / las que | slightly more careful | after prepositions, in non-restrictive clauses, when you need to disambiguate |
| el cual / la cual / los cuales / las cuales | formal, written, sometimes literary | legal and academic prose, journalism, careful speech — almost never in casual conversation |
The further right you move on this ladder, the more formal you sound. La mesa sobre la cual escribo (the table on which I write) is technically correct but would make a Spaniard at home sound like they're reading from a notarial deed. La mesa sobre la que escribo is the natural everyday choice. La mesa en la que escribo — using en instead of sobre — is even more natural.
El piso en el que vivo es muy pequeño.
The flat I live in is very small. — En el que: standard everyday form after a preposition.
La sentencia, la cual fue dictada por el Tribunal Supremo, sienta un precedente importante.
The ruling, which was issued by the Supreme Court, sets an important precedent. — El cual: formal/legal register. (formal)
The decision flowchart
Work through these questions in order. The first yes tells you what to use.
Step 1: Are you saying "whose"? → cuyo
If the relative clause expresses possession ("the man whose car is red"), you need cuyo. It agrees with what is possessed, not with the possessor. A subtle but cardinal trap.
Conozco a un escritor cuyas novelas se han traducido a veinte idiomas.
I know a writer whose novels have been translated into twenty languages. — Cuyas agrees with novelas (feminine plural), not with escritor.
Es una casa cuyo jardín da al mar.
It's a house whose garden faces the sea. — Cuyo agrees with jardín (masculine singular).
Cuyo is genuinely formal/written in modern peninsular Spanish. In conversation, Spaniards usually break the sentence apart: Conozco a un escritor — sus novelas se han traducido a veinte idiomas. The full treatment is on the cuyo page.
Step 2: Is the antecedent a place? → donde (usually best)
If the noun being modified is a physical or metaphorical location, donde is the most natural relative. It is equivalent to en el que / en la que but sounds more idiomatic.
El pueblo donde nací tiene quinientos habitantes.
The village where I was born has five hundred inhabitants. — Donde = en el que, but more natural.
La playa donde nos conocimos ya no existe.
The beach where we met no longer exists.
You can always replace donde with en el/la que if you want — both are correct. Choosing donde makes the sentence feel lighter and more spoken. See the donde page.
Step 3: Is the antecedent a time? → cuando (sometimes) or en que / en el que
For time antecedents you have three options: cuando, en que, or en el/la que. All three are acceptable; en que is the most common in modern speech.
Recuerdo el día en que nos conocimos.
I remember the day we met. — En que is the most idiomatic.
Hubo un momento, cuando todavía estaba la abuela, en que la familia se reunía cada domingo.
There was a time, when grandma was still around, when the family met every Sunday. — Cuando in non-restrictive position; en que in restrictive position. (literary)
Step 4: Is there a preposition immediately before the pronoun?
This is the question that most often forces you off bare que. With a preposition, the choice depends on what comes before:
| Preposition | With a thing | With a person |
|---|---|---|
| a, de, en, con (one-syllable) | el que / la que / los que / las que | quien / quienes or el que / la que |
| por, para, sobre, entre, sin, hacia, contra, etc. | el que / la que / los que / las que (or el cual, formal) | quien / quienes or el que / la que |
| complex preps (a través de, debajo de, encima de, junto a) | el cual / la cual preferred | el cual / la cual preferred |
Critical detail: when the preposition is a and the article is el, they fuse into al. La persona a la que conocí (singular feminine) but el chico al que conocí (singular masculine — a + el que → al que). The same fusion happens with de + el → del.
La empresa para la que trabajo está en Bilbao.
The company I work for is in Bilbao. — Para + la que; preposition forces a compound form, plain que would be ungrammatical here.
El profesor con quien estudié era muy estricto.
The teacher I studied with was very strict. — Con quien (preferred with people, slightly formal); con el que also fine.
El amigo del que te hablé llega mañana.
The friend I told you about arrives tomorrow. — De + el que = del que. (Person + preposition: del que and de quien both work.)
La casa al lado de la cual aparcamos pertenece a un actor.
The house we parked next to belongs to an actor. — Complex preposition al lado de favours the formal la cual. (formal)
Step 5: Is there NO preposition? → just que (almost always)
If there is no preposition pulling on the pronoun, bare que is your answer for both people and things, in both restrictive and non-restrictive clauses. This covers the majority of relative clauses you'll ever produce.
El libro que me regalaste es buenísimo.
The book you gave me is fantastic. — Bare que, restrictive, thing.
La chica que vive abajo trabaja en el hospital.
The girl who lives downstairs works at the hospital. — Bare que, restrictive, person.
Mi padre, que tiene setenta años, todavía corre maratones.
My father, who is seventy, still runs marathons. — Bare que, non-restrictive, person. Quien also possible but que is more colloquial.
Quien — only for people, often after prepositions
Quien (plural quienes) refers only to people and is most natural after a preposition or in non-restrictive clauses. In modern peninsular Spanish, quien in restrictive subject position (el chico quien vive arriba) is wrong — you must use que there. Save quien for these two contexts:
- After a preposition referring to a person: la persona con quien hablo, el amigo a quien escribí, la chica de quien me hablaste.
- In non-restrictive clauses about a person: Mi tío, quien vive en Vigo, viene mañana — slightly more careful than que, with a faint formal edge.
El abogado con quien hablé me lo confirmó.
The lawyer I spoke with confirmed it to me. — Con quien (preposition + person); con el que is also fine and slightly less formal.
❌ El chico quien vive arriba es mi primo.
Wrong — quien in restrictive subject position is ungrammatical in modern Spanish.
✅ El chico que vive arriba es mi primo.
The boy who lives upstairs is my cousin. — Restrictive, no preposition: must be que.
See the quien page for the full set of rules.
Lo que — the neutral relative
When the antecedent is not a specific noun but an idea, a situation, or a whole previous clause, Spanish uses lo que (or, slightly more formal, lo cual). English would say what or which.
No entiendo lo que dices.
I don't understand what you're saying. — Lo que: the antecedent is the entire content of what you're saying, not a specific noun.
Llegó tarde, lo que me molestó.
He arrived late, which annoyed me. — Lo que/lo cual refers to the whole previous clause.
See the lo que page for the full treatment, including the difference between lo que and lo cual.
A point where English and Spanish radically differ
English routinely deletes the relative pronoun in restrictive clauses where it functions as an object: the book I read, the man I saw, the house we lived in. Spanish cannot do this. The relative pronoun is obligatory.
❌ El libro leí ayer es interesante.
Wrong — Spanish cannot drop the relative pronoun the way English can.
✅ El libro que leí ayer es interesante.
The book I read yesterday is interesting. — Que is mandatory.
❌ La casa vivimos antes era más grande.
Wrong — relative pronoun cannot be omitted.
✅ La casa en la que vivíamos antes era más grande.
The house we used to live in was bigger. — Spanish also pulls the preposition to the front; English can leave it at the end (we lived in), Spanish cannot.
Connected to this: English routinely strands prepositions at the end of clauses (the chair I sat on, the friend I came with). Spanish forbids this. The preposition must travel with the pronoun to the front of the relative clause.
❌ El amigo que vine con.
Wrong — preposition stranding is impossible in Spanish.
✅ El amigo con el que vine.
The friend I came with. — Preposition pulled to the front, attached to the relative pronoun.
A quick decision cheat-sheet
| You want to say... | Use |
|---|---|
| that / who / which (no preposition) | que |
| whom / which (after preposition, thing) | el que / la que / los que / las que |
| with whom / to whom (preposition + person) | quien / quienes or el que-series |
| whose | cuyo / cuya / cuyos / cuyas (formal/written) |
| where | donde (or en el/la que) |
| when | en que, cuando, en el/la que |
| what (idea, situation) | lo que (everyday) or lo cual (formal) |
| which (referring to whole clause) | lo que / lo cual |
| formal/literary "which" | el cual / la cual / los cuales / las cuales |
Common mistakes
❌ La empresa que trabajo es grande.
Missing preposition — you work FOR a company. Spanish must spell out the relation.
✅ La empresa para la que trabajo es grande.
The company I work for is big. — Para + la que; English can drop both the preposition and the relative, Spanish can drop neither.
❌ El chico quien vive arriba.
Quien cannot introduce a restrictive subject relative clause.
✅ El chico que vive arriba.
The boy who lives upstairs. — Bare que, even though the antecedent is a person.
❌ El escritor que sus novelas son famosas.
Word-for-word translation of 'the writer whose novels are famous' — but Spanish has cuyo for this and forbids the construction with que + possessive.
✅ El escritor cuyas novelas son famosas.
The writer whose novels are famous. — Cuyas agrees with novelas. (formal/written; spoken Spanish usually rephrases.)
❌ La casa que vivo es pequeña.
Missing preposition — you live IN a house. Spanish never drops the en.
✅ La casa en la que vivo es pequeña. / La casa donde vivo es pequeña.
The house I live in is small. — Either en la que or donde works.
❌ La mesa que escribo sobre.
Preposition stranding — impossible in Spanish.
✅ La mesa sobre la que escribo. / La mesa en la que escribo.
The table I write on. — Preposition pulled to the front. The version with en is more idiomatic.
❌ A el chico que conocí ayer.
Failure to contract a + el → al. Spanish spelling rule, no exceptions.
✅ Al chico que conocí ayer le gustó la película.
The boy I met yesterday liked the film. — A + el → al, always.
Key takeaways
- Start with que. It covers the majority of cases, for both people and things, in both restrictive and non-restrictive clauses.
- Move off que only when forced — by a preposition, by a possessive (cuyo), or by a stylistic preference for quien or el cual.
- After a preposition, you need el que / la que / los que / las que (things or people) or quien / quienes (people only). Bare que is rare and increasingly avoided.
- Spanish never strands prepositions at the end. They travel with the pronoun.
- Spanish never deletes the relative pronoun the way English does (the book I read → el libro *que leí*).
- El cual lives in formal writing. Don't reach for it in conversation unless you want to sound like a lawyer.
- Donde for places, cuyo for possession, lo que for ideas — three special forms worth memorising.
- The restrictive / non-restrictive distinction (no comma vs comma) controls more than it looks. Mark it consciously when you build the clause.
Now practice Spanish
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Start learning Spanish→Related Topics
- Pronombre relativo 'que'A2 — Que is the single most common relative pronoun in Spanish — covering English 'that', 'which', 'who' all at once. It is mandatory where English makes it optional, and the structural backbone of half of Spanish complex sentences.
- Pronombre relativo 'quien/quienes'B1 — Quien is the human-only relative pronoun. It is restricted to people, mostly appears after prepositions or in non-restrictive clauses, and gives the sentence a slightly more elevated register than the all-purpose que.
- Pronombres relativos: el que, el cualB1 — The compound relative pronouns el que / la que / los que / las que and the formal el cual / la cual / los cuales / las cuales — when Spanish requires more than plain que and how the two series differ in register.
- Pronombre relativo 'cuyo'B2 — The relative possessive cuyo / cuya / cuyos / cuyas — Spanish 'whose' — which agrees in gender and number with the thing possessed, why educated speech requires it, and the colloquial workarounds learners hear in everyday conversation.
- Pronombre relativo 'donde'A2 — The relative donde for places — el sitio donde vivo — when it replaces en el que / en la que, when motion-prepositions a, de, hasta, por, hacia attach in front of it, and its non-place metaphorical uses.
- Pronombre relativo 'lo que'B1 — The neuter relative lo que — how to use it to mean 'what' or 'that which' when the antecedent is a whole idea, action, or situation rather than a specific noun, and how it differs from interrogative qué.