The Tianhou Temple, also known as the Kaitai Tianhou or Mazu Temple, is a temple to the Chinese Goddess Mazu, who is the Goddess of Sea and Patron Deity of fishermen, sailors and any occupations related to sea/ocean. The temple is located in the Anping District of Tainan on Taiwan.

The temple was erected at the Anping Ferry in 1668, on the site that is now occupied by Anping District's Shih-Men Primary School. Erected soon after Koxinga's successful invasion of Dutch Taiwan in the name of the Southern Ming resistance to the Qing Empire, it is thought to be the oldest extant Mazu temple on Taiwan Island. It housed statues of the Deities brought by Koxinga from Meizhou off the Fujian coast, the site of Mazuism's chief temple. The chief idol of Mazu is soft-bodied, with jointed feet, hands, and fingers and bound feet. It holds a fan in its right hand and a handkerchief in its left. It has tablets from the Guangxu Emperor of the Qing (c. 1880) and from presidents Li Denghui and Chen Shuibian of the Republic of China. It was demolished by the Japanese and has been rebuilt several times, most recently in 1976 and 1994.