Raúl Modesto Castro Ruz is a Cuban retired politician and general who served as the first secretary of the Communist Party of Cuba, the most senior position in the one-party communist state, from 2011 to 2021, and President of Cuba between 2008 and 2018, succeeding his brother Fidel Castro.

Raúl Modesto Castro Ruz was born in Birán, Cuba, the legal son of a Spanish immigrant father, Ángel Castro who was 55 at the time of his birth, and a Cuban-born mother of Canarian parentage, Lina Ruz. Raúl is the youngest of three brothers: Ramón, Fidel, and himself. He also has four sisters: Angela, Juanita, Emma, and Agustina. Ángel Castro's first wife, Maria Argota, also raised five legal half-siblings of Raúl: Pedro Emilio, Maria Lidia, Manuel, Antonia, and Georgina.