Spanish geopolitics in Jaime Vicens Vives: Between the Republic and Franchism - The article describes the Spanish geopolitics in the XX century. In this context, geopolitics was a relevant although not central interest for one of the most important Catalan intellectuals, Jaime Vicens Vives (1910-1960). He discovered geopolitics through the works of Karl Haushofer. Then, on behalf of the Spanish Republic (an almost forgotten event), he started writing in Catalan a geopolitics of Catalonia from a left-wing point of view. Just before printing this book, the victory of Franco's Nationalists compelled him to transform it into a right-wing geopolitics of Spain, finally published in Spanish in 1940. After the end of the war he reconsidered the whole matter in a new book of 1950, where he stressed the possibility of a new imperial mission of Spain in the new world order. In the course of time his historiographic position became closer to those of Toynbee and Braudel, an evolution suddenly terminated by his death in 1960.