San'en-zan Zoujou-ji (三縁山増上寺) is a Buddhist temple in the Shiba neighborhood of Minato in Tokyo, Japan. It is the Great Main Temple of the Chinzai sect of Shingon. The main image is of Amida Buddha. The founder of Zoujou-ji was Yuuyo Shousou (酉誉聖聡).
Shuuei (宗叡, 809-884), a disciple of Kuukai, founded a temple named Koumyouji (光明寺) at Kaizuka (貝塚, present-day Koujimachi in Chiyoda, Tokyo); it is said to be the forerunner of Zoujou-ji. Centuries later, in 1393 during the Muromachi period, at the time of Yuuyo Shousou, the temple converted from the Shingon to the Jodo sect. Shousou is thus the founder of the present-day temple.
Together with Kan'ei-ji, during the Edo period Zoujou-ji was the Tokugawa's family temple. Tokugawa Ieyasu had the temple moved, first to Hibiya, then in 1590, at the time of expansion of Edo Castle, to its present location.
With the fall of the Tokugawa shogunate, the grounds took on the character of a public park. The temple was badly damaged in World War II, but still retains the air of a major temple. Incidentally, the place name Daimon (大門 "Great Gate") refers to the gate of Zoujou-ji. The present gate is made of concrete.