| Liu Mao'en | |
| Birth Date: | 8 June 1898 |
| Birth Place: | Gongyi, Henan Province, China |
| Death Place: | Taipei, Taiwan |
| Branch: | National Revolutionary Army |
| Battles: | |
| Alma Mater: | Baoding Military Academy |
Liu Mao'en (; 8 June 1898 – 24 April 1981) was a Kuomintang (Chinese Nationalist Party) general from Gong County, Henan, who commanded the 14th Army Group when the Second Sino-Japanese War broke out.