The Temple of Garni (Armenian: Գառնիի տաճար, Gaṙnii tačar, [ˈgɑrnii ˈtɑtʃɑʁ]) is the only standing Greco-Roman colonnaded building in Armenia and the former Soviet Union. Built in the Ionic order in the village of Garni, Armenia, it is the best-known structure and symbol of pre-Christian Armenia.

The structure was probably built by king Tiridates I in the first century AD as a temple to the sun god Mihr. After Armenia's conversion to Christianity in the early fourth century, it was converted into a royal summer house of Khosrovidukht, the sister of Tiridates III. According to some scholars it was not a temple but a tomb and thus survived the destruction of pagan structures. It collapsed in a 1679 earthquake. Renewed interest in the 19th century led to excavations at the site in early and mid-20th century, and its eventual reconstruction between 1969 and 1975, using the anastylosis method. It is one of the main tourist attractions in Armenia and the central shrine of Hetanism (Armenian neopaganism).