| Jurisdiction: | Diocese |
| Caozhou | |
| Local: | 天主敎曹州敎區 |
| Latin: | Dioecesis Ceuziienensis |
| Country: |  China |
| Metropolitan: | Jinan |
| Province: | Jinan |
| Rite: | Latin Rite |
| Cathedral: | Cathedral of Christ the King in Heze |
| Area Km2: | 13,000 |
| Population: | 4,000,000 |
| Population As Of: | 1950 |
| Catholics: | 74,013 |
| Catholics Percent: | 1.9 |
| Bishop: | Sede Vacante |
| Metro Archbishop: | Joseph Zhang Xianwang |
The Roman Catholic Diocese of Caozhou/Tsaochow/Heze (Latin: Zaoceuven(sis),) is a diocese located in the city of Caozhou in the ecclesiastical province of Jinan in China.