Sajikdan (Korean: 사직단; Hanja: 社稷壇) is a Neo-Confucian altar located in Sajik-dong, Jongno District, Seoul, South Korea.

[1] It was built and used during the Joseon period to perform rituals related to soil and grain.

[2][3] When Seoul was founded during the Joseon period, the location of Sajikdan was prescribed by the ritual bureaucratic text Rites of Zhou.

[4] Along with the royal palace Gyeongbokgung and the shrine Jongmyo, Sajikdan is a fundamental symbol of the new capital city.

[4] On this square altar were honored on key moments of the lunar calendar the national deities of earth (Sa) and grains (Jik).