| Wang Sing-nan | |
| Native Name: | 王幸男 |
| Nationality: | Republic of China |
| Birth Date: | 1941 6, df=yes |
| Birth Place: | Tamai Village, Shinka District, Tainan Prefecture, Japanese Taiwan (modern-day Yujing District, Tainan, Taiwan) |
| Party: | DPP |
| Alma Mater: | ROC Military Academy |
| Occupation: | Politician |
Wang Sing-nan (; born 27 June 1941) is the caucus whip for the Democratic Progressive Party in the Legislative Yuan of the Republic of China on Taiwan.[1] He has represented the electoral district of Tainan City since February 2005.[2] On 10 October 1976, he sent a mail bomb to then-Governor of Taiwan Province Hsieh Tung-min, who suffered serious injuries to both hands as a result.[3] He was sentenced to life imprisonment for this and was imprisoned in the Green Island Prison until then-President Lee Teng-hui granted him clemency in 1990.