Lluís Companys i Jover (21 June 1882 – Spain, 15 October 1940) was a Catalan politician and leader of the Esquerra Party (Esquerra Republicana de Catalunya). He served as Minister of the Navy of the Second Spanish Republic, and President of Catalan Generalitat de Catalunya in 1933.

When the Spanish Civil War started in July 1936, Companys organized the Workers' Party of Marxist Unification (POUM) and the National Confederation of Trabajo (CNT) to defeat the military uprising in Barcelona. During the war, Companys attempted to maintain the unity of his political coalition, but after the Soviet consul, Vladimir Antonov-Ovseenko, threatened to suspend Russian aid, he sacked Andres Nin as minister of justice in December 1936.

Exiled to France in 1939 after the Civil War, he was arrested and extradited by German agents to the Spanish government in September 1940. He was put to death in compliance with a legal sentence at Montjuïc Castle (Barcelona) on October 15, 1940.

The principal stadium used for the 1992 Summer Olympics, located on the Montjuïc hill and currently used by the football club Espanyol, is officially named in his memory.

|- style="text-align: center;" | width="30%" |Preceded by:
Carles Pi i Sunyer | width="40%" style="text-align: center;" |President of ERC
1936–1940 | width="30%" |Succeeded by:
Heribert Barrera

|- style="text-align: center;" | width="30%" |Preceded by:
Francesc Macià i Llussà | width="40%" style="text-align: center;" |President of ERC
1933–1935 | width="30%" |Succeeded by:
Carles Pi i Sunyer

|- style="text-align: center;" | width="30%" |Preceded by:
(none) | width="40%" style="text-align: center;" |President of Catalan Parliament
1932–1933 | width="30%" |Succeeded by:
Joan Casanovas i Maristany