Cognomen Weiren (为人 
, 伟任 , Weiren 
) , around the world, is quite a rare last name. The cognomen Weiren is habitual in Cayman Islands, where it is quite a rare surname, Singapore, where it is a rare surname, and China, where it is a very rare surname. In absolute terms, it is the most numerous in China, Singapore, and Malaysia. More frequently, Weiren is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 伟任, 威任, 为人 | China |
| Weiren | China, Malaysia, Singapore, Taiwan, United States |
为仁, 为任, 为壬, 伟人, 伟仁, 伟忍, 伟轫, 伟韧, 伪人, 位人, 位仁, 偉仁, 僞人, 卫人, 卫仁, 卫任, 卫忍, 卫认, 味人, 唯人, 唯仁, 唯任, 唯韧, 围任, 圩人, 委仁, 委任, 委韧, 威人, 威仁, 娓仁, 尉人, 尉仁, 尉任, 巍人, 巍仁, 巍韧, 帏仁, 微人, 微仁, 惟人, 惟仁, 惟任, 惟壬, 惟荏, 慰人, 慰仁, 暐仁, 未人, 沩人, 渭人, 渭仁, 渭任, 炜人, 炜仁, 炜任, 炜荏, 為人, 為秂, 玮人, 玮仁, 玮任, 玮韧, 畏人, 維仁, 纬仁, 维人, 维仁, 维任, 维刃, 维忍, 维韧, 葳任, 蔚人, 蔚仁, 薇仁, 违仁, 韙任, 韦人, 韦仁, 韦任, 韦壬, and 魏仁
Su, Chou, Kong, Peng, Ruan, Ding, Leon, Tian, Wang, Yang, Zeng, Zhao, Zhou, Chang, Cheng, Liang, Jiang, Huang, Hsiao, Zhang, Xiang, Chuang, Chen, Castro, Chin, Xie, Li, Lu, Ji, Hu, Wu, Yu, Qi, Lau, Lee, Lin, Lim, Liu, Loo, Loh, Luo, Tan, Ong, Yan, Yap, Zou, Zhu, Chan, and Pratama