Surname Wanhai (万海 
, Wanhai 
) , globally, is quite a rare cognomen. The last name Wanhai is characteristic of Eastern Asia, particularly China, where it is a rare surname. More frequently, Wanhai is the forename as well as the last name.
An, Shen, Song, Peng, Deng, Ding, Long, Tang, Tong, Tian, Feng, Wang, Yang, Zhou, Qiao, Xing, Cheng, Liang, Jiang, Huang, Zhang, Zheng, Qin, Zhu, Yin, Yue, Du, Li, Fu, Ye, Shi, Sun, Chu, Cai, Cao, Cui, Zhong, Bai, Gao, Guo, Lei, Lin, Liu, Jia, Hao, Fan, Wei, Yan, Ren, and Xiong