•
East China Sea, also known as Donghai from its Chinese name (东海), a marginal sea east of China •
East Sea (Chinese literature), one of the
Four Seas, a literary name for the boundaries of China •
Donghai County (东海县), of Lianyungang, Jiangsu •
Donghai Island (东海岛), island in Zhanjiang, Guangdong • Donghai Subdistrict () •
Donghai Subdistrict, Quanzhou, in Fengze District, Quanzhou, Fujian •
Donghai Subdistrict, Lufeng, Shanwei, Guangdong •
Donghai Subdistrict, Jixi, in Chengzihe District, Jixi, Heilongjiang •
Donghai Subdistrict, Tianjin, in Hexi District, Tianjin • Towns named Donghai (东海镇) •
Donghai, Putian County, Fujian •
Donghai, Jidong County, Heilongjiang •
Donghai, Qidong, Jiangsu •
Donghai Commandery, historical commandery in present-day Shandong and Jiangsu ==Vietnam==