Montero is a Spanish surname meaning the occupational name for a beater or other assistant at a hunt, from an agent derivative of monte, which, as well as meaning 'mountain', 'hill'. Notable people with the surname include:
Adalí Montero (born 1982), Peruvian singer-songwriter
Amaia Montero (born 1976), Spanish singer-songwriter
Carlos Caridad Montero (born 1967), Venezuelan film director
Edgardo Abdala Montero (born 1978), Palestinian-Chilean footballer
Elehuris Montero (born 1998), Dominican baseball player
Enrique Montero (born 1954), Spanish footballer
Fredy Montero (born 1987), Colombian soccer player
Gabriela Montero (born 1970), Venezuelan-American classical piano virtuoso
Irene Montero (born 1988), Spanish politician and psychologist
Jefferson Montero (born 1989), Ecuadorian footballer
Jesús Montero (born 1989), Venezuelan baseball player
Juan Esteban Montero (1879–1948), Chilean president (1931–1932) Juan Manuel Montero Vázquez (1947–2012), Spanish military physician and Surgeon General Leonardo Montero, Argentine TV host Mayra Montero (born 1952), Cuban-Puerto Rican writer Miguel Montero (born 1983), Venezuelan-American baseball player Miguel Montero (tango singer) (1922–1975), Argentine tango singer Pablo Montero (born 1974), Mexican singer and actor Paolo Montero (born 1971), Uruguayan footballer Pilar Montero (1921–2012), American bar and restaurant owner Rafael Montero (disambiguation), several people Ricardo Montero (referee) (born 1979), Costa Rican football referee Ricardo Montero (cyclist) (1902–1974), Spanish racing cyclist Rosa Montero (born 1951), Spanish writer
Montero can also be used as a given name. Notable people with the given name include: Montero Lamar Hill (born 1999), American rapper and singer-songwriter, known as Lil Nas X