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| Introduced | 15 June 1990 |
|---|---|
| TLD type | Country code top-level domain |
| Status | Active |
| Registry | LK Domain Registry |
| Sponsor | LK Domain Registry |
| Intended use | Entities connected with  Sri Lanka |
| Actual use | Popular in Sri Lanka |
| Registration restrictions | Registrants must provide clear justification for registering particular name; some third-level names restricted by category |
| Structure | Registrations are made directly at the second level, or at the third level beneath second-level names |
| Documents | Policy |
| DNSSEC | Yes |
| Registry website | www |
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.lk is the Internet country code top-level domain (ccTLD) for Sri Lanka. Foreign companies who do not have a local presence can only reserve their top-level and corresponding open second-level domains (either through the LK Domain Registry or agents). In order to register and use a name they must have a contact address in Sri Lanka (which may be obtained through an agent or law firm).