What is “Oy”?
Oy stands for Osakeyhtiö (Finnish), a private limited liability company used primarily in Finland. The suffix signals that the business has limited liability and is privately held.
Full meaning & translation
The full form is Osakeyhtiö, a Finnish-language term. It translates literally as “limited liability company.” You may also encounter it abbreviated or written as ab, aktiebolag, osakeyhtiö.
Where it's used
Oy appears in company names registered in the following jurisdiction:
What it tells you about the company
Equivalent forms around the world
These are the closest structural equivalents to Oy in other jurisdictions — same entity category, different national law.
Normalizing “Oy” in your data
When matching or deduplicating company records, the legal suffix is noise — “Acme Oy” and “Acme” should resolve to the same entity. One API call strips it and returns a stable canonical form:
curl -X POST https://api.ambect.com/v1/normalize/company \
-H "Authorization: Bearer $AMBECT_KEY" \
-H "Content-Type: application/json" \
-d '{"name": "Acme Oy", "country": "fi"}'{
"data": {
"canonical": "acme oy",
"legal_type": null,
"tokens": [
"acme",
"oy"
]
},
"meta": {
"pipeline": [
"lowercase",
"legal_suffix"
],
"confidence": 0.99
}
}Compare Oy with
Frequently asked questions
What does Oy stand for?
Oy stands for Osakeyhtiö (Finnish), which translates as "limited liability company".
Is a Oy public or private?
A Oy is a private entity — its shares are not publicly listed or traded on a stock exchange.
What is the liability in a Oy?
Owners of a Oy have limited liability. Their personal assets are protected, and their exposure is capped at the amount they invested.
Which countries use Oy?
Oy is used in Finland.
Is a Oy the same as a LLC?
Functionally comparable — both are private limited liability company forms — but they operate under different national laws with distinct formation, capital, and governance requirements.
Need to normalize Oy at scale? The Ambect API handles it across 100+ countries in under 5 ms.
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