Carlos Mendieta y Montefur (November 4, 1873 – 27 September 1960) was a Cuban politician and Provisional President of Cuba.
A chief opponent of Gerardo Machado, Mendieta was installed as provisional President of Cuba in 1934 by a coup led by Fulgencio Batista. During his presidency, women gained the right to vote and the Platt Amendment was rescinded. Mendieta resigned in 1935 after unrest continued.
He was married to Carmela Ledon (? – 20 July 1942) and they had one child, Carmen Mendieta-Ledon, who married Calixto Garcia Velez.