| Jurisdiction: | Diocese |
| Xuzhou | |
| Local: | 天主教徐州教区 |
| Latin: | Dioecesis Siuceuvensis |
| Country: | China |
| Metropolitan: | Nanjing |
| Rite: | Latin Rite |
| Cathedral: | Cathedral of the Sacred Heart of Jesus in Xuzhou |
| Area Km2: | 20,000 |
| Population: | 4,500,000 |
| Population As Of: | 1950 |
| Catholics: | 93,500 |
| Catholics Percent: | 2.1 |
| Metro Archbishop: | Francis Savio Lu Xinping |
The Roman Catholic Diocese of Xuzhou/Süchow (Latin: Siuceuven(sis),) is a diocese located in the city of Xuzhou (Jiangsu) in the ecclesiastical province of Nanjing in China.