Swedish has one tidy way to say "X's Y": you add -s to the owner. Anna's car is Annas bil, the boy's bike is pojkens cykel, Sweden's capital is Sveriges huvudstad. The mechanics are simpler than English in two ways — there is only ever one ending (a plain -s) and it never takes an apostrophe — but those very similarities are a trap, because the English habit of writing Anna's with an apostrophe is the most visible, most frequent error English speakers make in Swedish. This page covers the genitive of full nouns (names, common nouns, plurals). Possessive pronouns (my, your, our — min, din, vår) work differently and have their own page, Possessive Pronouns.
The rule: add -s, no apostrophe
To make any noun possessive, add -s directly to it. No apostrophe, no space, no extra word.
Annas bil står på gården.
Anna's car is in the yard. Anna → Annas — a bare -s, no apostrophe.
Har du sett Eriks nya jacka?
Have you seen Erik's new jacket? Erik → Eriks.
The reason Swedish can get away with no apostrophe is that there is no -s plural to confuse it with. In English, boys (plural) and boy's (possessive) and boys' (plural possessive) all sound identical, so the apostrophe earns its keep disambiguating them. Swedish plurals end in -or, -ar, -er, -n or nothing — never -s — so a word-final -s can only ever mean the genitive. The apostrophe has no job to do, and Swedish simply does not use it here.
It attaches to any form: singular, plural, definite
The -s is not picky. It clips onto whatever noun form you already have — singular or plural, indefinite or definite. You build the noun form you need first, then add -s last of all.
- Indefinite singular: en pojke → en pojkes cykel (a boy's bike)
- Definite singular: pojken → pojkens cykel (the boy's bike)
- Definite plural: barnen → barnens rum (the children's room)
- Plural names/nouns: grannarna → grannarnas trädgård (the neighbours' garden)
Bilens färg har bleknat i solen.
The car's colour has faded in the sun. Definite singular bilen → bilens — the -s rides on top of the definite -en.
Barnens rum är alltid stökigt.
The children's room is always messy. Definite plural barnen → barnens.
Lärarens kommentar var hård men rättvis.
The teacher's comment was harsh but fair. lärare → läraren (definite) → lärarens.
This is worth dwelling on, because it differs from English in a quiet but important way. English marks the plural possessive with a position (the apostrophe after the s: the children's / the boys'). Swedish marks it with a stacked ending: you take the full plural form and append -s to the very end. So flickorna ("the girls") becomes flickornas ("the girls'"), and barnen ("the children") becomes barnens. The -s is the last brick in the wall, laid after number and definiteness are already in place.
Flickornas lag vann turneringen.
The girls' team won the tournament. flicka → flickor → flickorna → flickornas — number, then definiteness, then genitive -s.
The genitive replaces the article
Here is the structural point that catches learners off guard: a genitive noun does the job of an article. Once you put Annas in front of bil, the phrase is complete and definite — you do not add en or the definite suffix as well.
Det här är Annas bil.
This is Anna's car. NOT 'Annas en bil' and NOT 'Annas bilen' — the genitive already makes it definite.
Min systers hund heter Bamse.
My sister's dog is called Bamse. 'syster' → 'systers'; no extra article on 'hund'.
So a genitive phrase is automatically definite — Annas bil means the car that is Anna's, never a car of Anna's. This mirrors English (we also say Anna's car, not the Anna's car), but the Swedish twist is that it overrides the suffix system you have been drilling: you do not say Annas bilen, even though bilen is how you would normally say "the car." The owner's -s has already supplied the definiteness, so the head noun stays bare.
Names and nouns already ending in -s, -x, -z
What if the owner's name already ends in -s (or -x or -z)? You do not add a second -s and you do not add an apostrophe-s. The word stays exactly as it is, and context (plus the following noun) signals the genitive.
Lars bok ligger på bordet.
Lars's book is on the table. Lars ends in -s, so nothing is added — NOT 'Lars's' and NOT 'Larss'.
Vi var hemma hos Max föräldrar i helgen.
We were at Max's parents' place over the weekend. Max ends in -x → no extra ending.
In careful or formal writing you may see an apostrophe with no following s used to flag the genitive of such a name — Tobias' tal, Marx' skrifter (formal). This is optional and stylistic; the everyday written norm is simply to add nothing: Lars bok, Max hus. Note this is the only place an apostrophe appears anywhere near the Swedish genitive, and even here there is never an s after it.
Klaus fru vinkade från fönstret.
Klaus's wife waved from the window. Klaus ends in -s, so nothing is added — 'Klaus fru', not 'Klaus's' or 'Klauss'.
Names ending in a vowel, including å/ä/ö, behave totally normally — just add -s:
Åsas och Pers hus ligger vid sjön.
Åsa's and Per's house is by the lake. Åsa → Åsas (vowel-final, plain -s); Per → Pers.
Genitive of whole phrases
Swedish, like English, can attach the -s to the end of a longer phrase, not just a single name — the so-called group genitive. The -s lands on the last word of the owning phrase.
Kungen av Sveriges tal hölls i går.
The King of Sweden's speech was held yesterday. The -s goes on the last word of the phrase: 'Sverige' → 'Sveriges'.
Mannen i hörnets glas var tomt.
The man in the corner's glass was empty. -s on 'hörnet' → 'hörnets', closing the whole phrase.
Common Mistakes
❌ Anna's bil / Erik's jacka
Incorrect — the English apostrophe. Swedish has no apostrophe in the genitive.
✅ Annas bil / Eriks jacka
Anna's car / Erik's jacket — plain -s, glued straight on.
❌ Annas bilen / pojkens en cykel
Incorrect — adding an article on top of the genitive. The genitive already makes the phrase definite.
✅ Annas bil / pojkens cykel
Anna's car / the boy's bike — the head noun stays bare.
❌ Lars's bok / Larss bok
Incorrect — a name already ending in -s adds nothing and never takes an apostrophe-s.
✅ Lars bok
Lars's book.
❌ barnens' rum (apostrophe on a plural)
Incorrect — even plural possessives take no apostrophe. The plural definite barnen simply adds -s.
✅ barnens rum
the children's room.
❌ Sverige huvudstad (forgetting the -s entirely)
Incorrect — the genitive needs the -s: it's the -s that signals possession.
✅ Sveriges huvudstad
Sweden's capital.
Key Takeaways
- The genitive is a plain -s added to the noun, with no apostrophe — Annas bil, not Anna's bil. This is the flagship English-transfer error.
- The -s attaches to any form — singular, plural, definite — as the last ending of all: bilens, barnens, flickornas.
- A genitive replaces the article and makes the phrase definite, so the head noun stays bare: Annas bil, never Annas bilen or Annas en bil.
- A name already ending in -s/-x/-z adds nothing (Lars bok, Max hus); formal writing may add a bare apostrophe (Tobias'), never an apostrophe-s.
- Vowel-final names, including å/ä/ö, just add -s: Åsas, Pers.
Now practice Swedish
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Start learning Swedish→Related Topics
- Swedish Nouns: OverviewA1 — The whole map of the Swedish noun for English speakers — two genders (en and ett) learned per word, four forms (indefinite/definite × singular/plural), five plural declensions, and the enclitic 'the' glued onto the noun's end. Plus the two English instincts you must abandon on day one: there is no -s plural, and 'the' is not a separate word.
- Possessive Pronouns (min, din, sin)A1 — Swedish possessives split into an agreeing group (min/mitt/mina, din, sin, vår, er) that changes to match the thing OWNED — like Romance languages — and a frozen group (hans, hennes, dess, deras) that never changes. They work both before a noun (min bil) and standing alone (Bilen är min). No apostrophe, ever.
- The Linking -s- in CompoundsB2 — When Swedish glues two words into a compound, it sometimes inserts a linking morpheme between them — most often -s- (arbetsdag, frihetskämpe), sometimes -e-, -a-, -o-, or a vowel change (gata → gatukorsning). The choice is often called unpredictable, but there is a strong partial rule: a first element that is itself a compound, or one ending in -het, -ning, -skap, -ing, reliably takes -s-. This page gives you that rule plus the main exceptions.
- The Genitive Apostrophe Error (Anna's bil)A1 — Swedish forms the possessive with a plain -s and absolutely NO apostrophe: Annas bil, not *Anna's bil. The apostrophe-s of English ('s) has no place in Swedish — it is a pure Anglicism. Names already ending in s, x or z add nothing at all: Lars bok, Max cykel. This page drills the corrections you'll reach for daily.