Republicanism in Spain is a political position and movement that holds that Spain should be a republic.

Francesc Pi i Margall was a Spanish federalist and republican politician and theorist who served as president of the short-lived First Spanish Republic in 1873. He was also a historian, philosopher, romanticist writer, and was also the leader of the Federal Democratic Republican Party and the Democratic Party. Pi was turned into a sort of secular saint in his time.