Eugène Gigout (French: ; 23 March 1844 – 9 December 1925) was a French organist and a composer, mostly of music for his own instrument.Gigout was born in Nancy, and died in Paris. A pupil of Camille Saint-Saëns, he served as the organist of the French capital's Saint-Augustin Church for 62 years. He became widely known as a teacher and his output as a composer was considerable. Renowned as an expert improviser, he also founded his own music school. His nephew by marriage was Léon Boëllmann, another distinguished French composer and organist.