Rio Fujii
Japanese pop singer and former member of Kobushi Factory
Rio Stella Sane
daughter of footballer Leroy Sane
Mohamed Muktar Jama "Mo" Farah
British distance runner
Maurice Alberto "Mo" Rocca
American comedian and TV personality
Maurice Samuel "Mo" Vaughn
American baseball player
Maurice John Giblin "Mo" Johnston
Scottish footballer
Morris King "Mo" Udall
U.S. Congressman from Arizona
Morris Jackson "Mo" Brooks
U.S. Congressman from Alabama
Mohamed "Mo" Amin
Kenyan photojournalist
Mo
ring name of Robert Lawrence Horne, American pro wrestler
Mo Twister
stage name of Mohan Gumatay, Filipino TV personality and DJ
Mo Willems
American children's writer and illustrator
Wei Mo
Chinese official during the Tang dynasty
Zhao Mo
ruler of the kingdom of Nanyue, China
Zhongli Mo
Chinese general during the Chu–Han Contention
Mo Vito Harder (b. 2013)
son of swimmer Franziska van Almsick & Jurgen Harder