Ko Man Nok (Thai: เกาะมันนอก, in Thai pronounced as /kɔ̀ʔ mān nɔ̂ːk/; also spelled Koh Munnork) is a small private island, among a group of islands in the Klaeng Bay, Rayong Province, Thailand, called Man. The group includes Ko Man Nai, Ko Man Klang and Ko Man Nok islands. Ko Man Nok is approximately [1] in size, and about 20 nautical miles away from Koh Samet, a 2½ hours journey from Bangkok. Ko Man Nok has only one resort, Koh Munnork Resort.
Activities at the resort include kayaking, snorkeling and fishing.