Mian'en (綿恩; 18 September 1747 – 18 July 1822) was Qing dynasty imperial prince and the second son of Yonghuang.
Mian'en was born on 18 September 1747 to lady Irgen Gioro, Yonghuang's secondary consort.
Mian'en showed high potential in martial arts in the childhood, thus was favoured by the Qianlong Emperor.
According to the relation of Choson Korean ambassadors, Mian'en had more abilities than his younger uncle, Yongyan.
Mian'en died on 18 July 1822 and was granted posthumous title of Prince Dinggong of the First Rank (定恭亲王， meaning "stable and reverent").