| Jurisdiction: | Diocese |
| Suifu | |
| Local: | Chinese: 天主教叙府教區 Chinese: 天主教叙府教区 |
| Latin: | Dioecesis Siufuana |
| Country: | China |
| Province: | Chongqing |
| Metropolitan: | Chongqing |
| Established: | January 24, 1860 |
| Denomination: | Roman Catholic |
| Sui Iuris Church: | Latin Church |
| Rite: | Roman Rite |
| Cathedral: | Blessed Sacrament Cathedral, Yibin |
| Bishop: | Peter Luo Xuegang |
| Metro Archbishop: | Sede vacante |
The Roman Catholic Diocese of Suifu (Latin: Dioecesis Siufuana; Chinese: t=天主教叙府教區), also known as Diocese of Yibin, is a Latin Catholic diocese located in the city of Yibin (formerly known as Suifu) in the ecclesiastical province of Chongqing in western China. It was established on January 24, 1860 as the Apostolic Vicariate of Southern Szechwan for the Mission of Sichuan (Szechwan). The area lies in the southern part of the mission territory, hence the designation of Southern Szechwan Mission.
The Diocese of Suifu covers Luzhou (French: Lou-tcheou), Neijiang (French: [[Weiyuan County, Sichuan|Oui-yuen-hien]]), Yibin (French: Su-tcheou-fou) and Zigong (French: [[Ziliujing, Zigong|Tsen-lieou-tsin]]), totaling approximately 50,000 square kilometers.[1] It is bordered by the Diocese of Jiading and Diocese of Ningyuan to the west, Archdiocese of Chongqing to the east, Diocese of Shunqing to the north, and Archdiocese of Kunming and Archdiocese of Guiyang to the south.