The Roman Catholic Diocese of Yanji/Yenki (Latin: Ienchiven(sis), Chinese: 延吉) is a diocese located in the city of Yanji (Jilin) in the ecclesiastical province of Shenyang 瀋陽 in China.

• July 19, 1928: Established as the Apostolic Prefecture of Yanji 延吉 from the Apostolic Vicariate of Wonsan
• April 13, 1937: Promoted as Apostolic Vicariate of Yanji 延吉
• April 11, 1946: Promoted as Diocese of Yanji 延吉

• Bishops of Yanji 延吉 (Roman rite)
  • Fr. Timotheus Bitterli, O.S.B. (이 디모테오) (Apostolic Administrator April 9, 1954 – October 4, 1985)
  • Bishop Theodor Breher, O.S.B. (April 11, 1946 – November 2, 1950)
• Prefects Apostolic of Yanji 延吉 (Roman Rite)
  • Fr. Theodor Breher, O.S.B. (later Bishop) (February 5, 1929 – April 13, 1937)

• GCatholic.org
• Catholic Hierarchy

42°54′00″N 129°30′00″E / 42.9000°N 129.5000°E / 42.9000; 129.5000