Yongjia or Yung-chia may refer to:
- The former name for Wenzhou, a city in Zhejiang, China. Earliest usage of Wenzhou name began in about 760 AD; Yongjia name usage has continued.
- Yongjia County, in Zhejiang, China
- Yongjia School, Chinese school of thought during the Song Dynasty
- Yongjia Xuanjue, a Zen monk during the Tang Dynasty
- Yongjia (brachiopod), a brachiopod genus.