Ministry of Interior — Ko Samui District Administration (Amphoe Ko Samui)
The Ko Samui District Office (Amphoe), on Taweerat Pakdee Road in Na Thon, is the local seat of Thailand's district-level government administration, headed by the District Chief (Nai Amphoe). It is a separate department from both the Immigration Office in Maenam and Koh Samui City Municipality, despite all three being loosely called "government offices" by residents.
For most day-to-day expat business on the island -- visa matters, property transfers, utility connections -- the relevant office is Immigration, the Land Office or a utility provider directly rather than the Amphoe. The District Office becomes relevant mainly for civil registration matters, most notably marriage registration for a foreigner marrying a Thai national, a required step before applying for a Non-Immigrant O (marriage) visa or extension at Immigration.
Address: Taweerat Pakdee Road, Ang Thong Sub-district, Ko Samui District, Surat Thani 84140
Hours: Standard Thai government-office hours apply -- typically Monday-Friday, roughly 8:30 AM-4:30 PM with a midday break -- but we could not independently confirm this office's exact current public hours from an official source, so call ahead or confirm with a local fixer or lawyer before an important visit.
Phone: Tel +66 (0)77 420 372 / +66 (0)77 420 373
Getting there: In Na Thon, the island's main town and ferry port on the west coast -- reachable by car, motorbike, songthaew or Grab from anywhere on the ring road.
BAANLYY does not represent or speak on behalf of Ministry of Interior — Ko Samui District Administration (Amphoe Ko Samui). Hours, required documents and procedures can change — always confirm current details on the agency's own official site or by phone before visiting. Visit the official Koh Samui Amphoe website →
Primary and official sources are cited above. Government rules, fees and procedures in Thailand change over time and vary by office; always confirm current requirements with the relevant authority before relying on them. BAANLYY never takes paid placement in editorial content.
Tell us your situation — our team can point you to what to bring and what to expect.