Mendizabal or Mendizábal is a Basque surname meaning 'wide mountain'. It may refer to:
Enrique Mendizabal (born 1919)), pharmacist and Olympic Shooter for Peru at the 1948 London Games
Enrique Mendizabal Olaechea (born 1977), founder of On Think Tanks and the Peruvian Aliance for the Use of Evidence, promoter of the PODER Award to the Peruvian Think Tank of the Year and travel writer
Gabriel Mendizabal (1765–1838), general during the Napoleonic Wars
Guillermo Mendizábal (born 1954), retired Mexican footballer and manager
Ignacio Uría Mendizábal (1937–2008), Basque businessman, head of construction company, Altuna y Uría
Jaizki Mendizabal (born 1977), telecommunications senior researcher, lecturer and author
José María Álvarez Mendizábal (1891–1965), Spanish politician and lawyer
Juan Álvarez Mendizábal (1790–1853), Spanish economist and politician
Luis A. Aranberri Mendizabal “Amatiño” (born 1945), Basque media professional
Mariano Juaristi Mendizábal (1904–2001), Azkoitian Basque pelota player known as Atano III
Rosendo Mendizabal (1868–1913), born in Buenos Aires, Argentina
Sergio Mendizábal (born 1920), retired Spanish film actor
