Family name Yudan (Yudan 
, 雨丹 , 钰丹 ) , in the world, is quite a rare surname. The last name Yudan is characteristic of South-eastern Asia, particularly Malaysia, where it is a rare surname, Indonesia, and Philippines, where it is a very rare surname. In absolute terms, this name is the most popular in China, Indonesia, and Philippines. More frequently, Yudan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yudan | Taiwan, China, Indonesia, Malaysia, Philippines |
| 雨丹, 瑜丹, 钰丹 | China |
Yudán, Юдан, יודן, 与丹, 与淡, 予丹, 予郸, 于丹, 于单, 于旦, 余丹, 余单, 余旦, 余淡, 俣丹, 喻丹, 喻单, 堉丹, 妤丹, 娱丹, 宇丹, 宇单, 宇担, 宇旦, 宇聃, 宇诞, 寓丹, 嵛丹, 彧丹, 彧聃, 愈丹, 愈旦, 愉丹, 昱丹, 昱单, 昱旦, 棫丹, 榆丹, 榆耽, 欲丹, 毓丹, 毓旦, 浴丹, 淯丹, 渝丹, 渝单, 渝郸, 煜丹, 煜单, 煜聃, 燠丹, 玉丹, 玉单, 玉弹, 玉担, 玉旦, 玉淡, 玉聃, 玉胆, 玉诞, 玉郸, 瑜单, 瑜淡, 瑜澹, 禹丹, 禹诞, 羽丹, 羽旦, 羽诞, 聿丹, 聿单, 育丹, 育单, 育旦, 育诞, 芋丹, 芋蛋, 虞丹, 裕丹, 裕但, 裕单, 裕旦, 誉丹, 誉旦, 语丹, 豫丹, 豫郸, 郁丹, 郁旦, 郁郸, 鈺丹, 钰单, 钰妉, 钰旦, 雨单, 雨旦, 雨蛋, 雨诞, 魚蜑, 鱼丹, 鱼蛋, and 유단
Ma, Deng, Ding, Dong, Gong, Ling, Tang, Fang, Wang, Yang, Yuan, Zeng, Zhao, Zhou, Xiao, Liang, Jiang, Huang, Zhang, Zheng, Xiong, Ouyang, Chen, Song, Xia, Zhu, Su, Li, Lu, He, Hu, Fu, Wu, Yi, Xu, Shi, Zhanglin, Sun, Cao, Bin, Gan, Guo, Lin, Liu, Luo, Jin, Wei, Yan, Chu, and Hernandez