Donghai
- Beihai (disambiguation)
- Donghae (disambiguation)
- Donghai Commandery
- Donghai County
- Donghai Island
- Donghai Subdistrict, Lufeng
- Donghai Subdistrict, Quanzhou
- Donghai Subdistrict, Tianjin
- East China Sea
- East Sea (Chinese literature)
- East Sea (disambiguation)
- Eta Serpentis
- Four Seas
- Nanhai (disambiguation)
- Tunghai (disambiguation)
- Tōkai (disambiguation)
- Xihai (disambiguation)
- Đông Hải District
- 東海 (disambiguation)