Montemayor is a surname. Notable persons with that name include:
Carlos Montemayor (1947–2010), Mexican novelist, poet, essayist, literary critic, tenor, and political analyst
Diego de Montemayor (1530–1610), Spanish conquistador, explorer, officer, and politician
Felipe Montemayor (born 1928), Mexican footballer
Jorge de Montemayor (c. 1520 – 1561), Portuguese novelist and poet
Myriam Montemayor Cruz (born 1981), Mexican singer
Rhoda Montemayor (born 1979), British actress