In the geologic timescale, the Wuchiapingian or Wujiapingian (from Chinese: 吴家坪; pinyin: Wújiāpíng; lit.

'Wu Family Flatland' in the Liangshan area of Hanzhong, Shaanxi Province[4] 33°03′59″N 107°01′24″E / 33.0664°N 107.0232°E / 33.0664; 107.0232) is an age or stage of the Permian.

[5] Regional stages with which the Wuchiapingian is coeval or overlaps include the Djulfian or Dzhulfian, Longtanian, Rustlerian, Saladoan, and Castilian.

A global reference profile for this boundary (a GSSP) is located near Laibin in the Chinese province of Guangxi.

[2] The top of the Wuchiapingian (the base of the Changhsingian) is at the first appearance of conodont species Clarkina wangi.