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
- Jose Montemayor Jr., Filipino cardiologist and a candidate for the 2022 Philippine presidential election.