| Jurisdiction: | Diocese |
| Nanlong | |
| Local: | 天主教安龙教区 |
| Latin: | Dioecesis Nganlomensis |
| Country: | China |
| Metropolitan: | Guiyang |
| Province: | Guiyang |
| Rite: | Latin Rite |
| Area Km2: | 45,000 |
| Bishop: | Sede Vacante |
| Metro Archbishop: | Paul Xiao Zejiang |
| Map: | Mission du Kouy-tcheou.jpg |
The Roman Catholic Diocese of Nanlong/Anlong (la|Nganlomen(sis), Chinese: t=南龍, 安龍) is a diocese located in Anlong (Guizhou) in the ecclesiastical province of Guiyang in China.