What is “KOK”?
KOK (Public Treasury (Japanese government financial institution)) is a nonprofit organization used primarily in Japan. It signals limited liability and private ownership.
Where it's used
KOK 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 KOK in other jurisdictions — same entity category, different national law.
Normalizing “KOK” in your data
When matching or deduplicating company records, the legal suffix is noise — “Acme KOK” 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 KOK", "country": "jp"}'{
"data": {
"canonical": "acme kok",
"legal_type": null,
"tokens": [
"acme",
"kok"
]
},
"meta": {
"pipeline": [
"lowercase",
"legal_suffix"
],
"confidence": 0.99
}
}Frequently asked questions
What does KOK mean?
KOK means "Public Treasury (Japanese government financial institution)".
Is a KOK public or private?
A KOK is a private entity — its shares are not publicly listed or traded on a stock exchange.
What is the liability in a KOK?
Owners of a KOK have limited liability. Their personal assets are protected, and their exposure is capped at the amount they invested.
Which countries use KOK?
KOK is used in Japan.
Need to normalize KOK at scale? The Ambect API handles it across 100+ countries in under 5 ms.
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