| Jurisdiction: | Diocese |
| Yongjia | |
| Local: | 天主教永嘉教区 |
| Latin: | Dioecesis Iomchiavensis |
| Country: | China |
| Metropolitan: | Hangzhou |
| Province: | Hangzhou |
| Rite: | Latin Rite |
| Cathedral: | St. Paul's Cathedral, Wenzhou, Zhejiang |
| Bishop: | Peter Shao Zhumin (邵祝敏) |
| Metro Archbishop: | Sede Vacante |
| Coadjutor: | Peter Shao Zhumin (邵祝敏)[1] |
The Roman Catholic Diocese of Yongjia/Yungkia/Wenzhou (Latin: Iomchiaven(sis),) is a diocese located in the city of Yongjia in the ecclesiastical province of Hangzhou in China.