| Mao Zetan | |
| Native Name: | 毛澤覃 |
| Birth Date: | 25 September 1905 |
| Birth Place: | Xiangtan, Hunan, Great Qing |
| Death Place: | Ruijin, Jiangxi, Republic of China |
| Death Cause: | Executed by the Kuomintang |
| Nationality: | Chinese |
| Other Names: | Mao Zelin (毛泽淋) |
| Occupation: | Guerrilla soldier |
| Parents: | Mao Yichang Wen Qimei |
| Spouse: | |
Mao Zetan (also named Mao Zelin, courtesy name first Yongju, then Runju ; 25 September 1905 - 25 April 1935) was a younger brother of Mao Zedong.[1] He joined the Chinese Communist Party in 1923. In 1927, he participated in the Nanchang Uprising, retreating with the Communists to the Jinggang Mountains at its completion.
In 1935, at the age of 29, he was killed while fighting Kuomintang forces in Jiangxi, covering the withdrawal of the main Communist army during the Long March.
In 1927 he married Zhou Wennan. They had a son, later a soldier killed by Kuomintang forces.