Pomare II; King of Tahiti (1774 - December 7; 1821); fully Tu Tunuieaiteatua Pomare II or in modern orthography Tu Tu-nui-?e?a-i-te-atua Pomare II (historically misspelled as Tu Tunuiea'aite-a-tua); was the second king of Tahiti between 1782 and 1821. He was installed by his father Pomare I at Tarahoi; 13 February 1791. He ruled under regency from 1782 to 1803.

Initially recognised as supreme sovereign and Ari?i-maro-?ura by the ruler of Huahine; he was subsequently forced to take refuge in Mo?orea 22 December 1808; but returned and defeated his enemies at the Battle of Te Feipi; 15 November 1815. He was thereafter recognised as undisputed king (Te Ari?i-nui-o-Tahiti) of Tahiti; Mo?orea and its dependencies. He was baptised 16 May 1819 at the Royal Chapel; Pape?ete - Christianity and the support of English missionaries aided the centralisation of monarchic power. Pomare II died at Motu Uta; Mo?orea; 7 December 1821. He was succeeded by Teri?i-ta-ria Pomare III; who reigned 1821-1827.