Mo Huilan (simplified Chinese: 莫慧兰; traditional Chinese: 莫慧蘭; pinyin: Mò Huìlán; born 19 July 1979 in Guilin, Guangxi) is a retired Chinese gymnast who competed at the 1996 Olympic Games in Atlanta. She was one of China's most successful gymnasts in the 1990s. She was known for performing routines of exceptional difficulty and technique, but also for inconsistency. Her birth date has been reported in various events as July 19 and November 7; it is unclear which is correct. She is a fraternal twin; her sister Mo Huifang was also a gymnast.