The domain name int is a sponsored top-level domain (sTLD) in the Domain Name System of the Internet. Its name is derived from the word international, characterizing it use for world-wide purposes.

According to current Internet Assigned Numbers Authority (IANA) policy, the int sTLD is reserved for international treaty-based organizations, United Nations agencies and organizations or entities having Observer status at the UN. The first use of this generic top-level domain was by NATO, which had been assigned the nato TLD.

int is considered to have the strictest application policies of all TLDs, as it implies that the holder is a subject of international law. For this reason, the application procedure requires the applicant to provide evidence that it is indeed treaty-based by providing a United Nations treaty registration number and that it has independent legal status.