Dong'ou (disambiguation)
Dong'ou or Eastern Ou was an ancient former kingdom in Zhejiang, China.
Dong'ou (东瓯/東甌) may also refer to:
- Wenzhou, former capital of Dong'ou Kingdom
 - Wenzhounese, a dialect of Wu Chinese
 - Dong'ou Subdistrict (东瓯街道), a subdistrict of Wenzhou