What is “UD”?
UD (trading business) is a sole proprietorship used primarily in Indonesia. It signals unlimited liability and private ownership.
Where it's used
UD 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 UD in other jurisdictions — same entity category, different national law.
Normalizing “UD” in your data
When matching or deduplicating company records, the legal suffix is noise — “Acme UD” 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 UD", "country": "id"}'{
"data": {
"canonical": "acme ud",
"legal_type": null,
"tokens": [
"acme",
"ud"
]
},
"meta": {
"pipeline": [
"lowercase",
"legal_suffix"
],
"confidence": 0.99
}
}Frequently asked questions
What does UD mean?
UD means "trading business".
Is a UD public or private?
A UD is a private entity — its shares are not publicly listed or traded on a stock exchange.
What is the liability in a UD?
Members of a UD have unlimited personal liability — they can be held responsible for the entity's debts beyond their initial investment.
Which countries use UD?
UD is used in Indonesia.
Need to normalize UD at scale? The Ambect API handles it across 100+ countries in under 5 ms.
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