The Diocese of Xinyang (also known as Sinyang; Latin: Siniamen(sis), Chinese: 信陽) is a diocese located in the city of Xinyang in the ecclesiastical province of Kaifeng in China.

• December 15, 1927: Established as the Apostolic Prefecture of Xinyangzhou 信陽州 from Apostolic Vicariate of Kaifengfu 開封府
• April 25, 1933: Promoted as Apostolic Vicariate of Xinyangzhou 信陽州
• April 11, 1946: Promoted as Diocese of Xinyang 信陽

• Bishops of Xinyang 信陽 (Roman rite)
  • Bishop Antonio Pott, S.V.D. (March 8, 1951 – 1954)
  • Bishop Vitus Zhang Zuo-heng (Chang Tso-huan), S.V.D. (張作恆) (April 11, 1946 – November 13, 1949)
• Vicars Apostolic of Xinyangzhou 信陽州 (Roman Rite)
  • Bishop Vitus Zhang Zuo-heng (Chang Tso-huan), S.V.D. (張作恆) (July 8, 1941 – April 11, 1946)
  • Bishop Ermanno Schoppelrey, S.V.D. (December 13, 1933 – May 25, 1940)
• Prefects Apostolic of Xinyangzhou 信陽州 (Roman Rite)
  • Fr. Giorgio Froewis, S.V.D. (August 1, 1928 – 1932)

• GCatholic.org
• Catholic Hierarchy