Paul Ladmirault (8 December 1877 – 30 October 1944) was a French composer whose music expressed his devotion to Brittany. Claude Debussy wrote that his work possessed a "fine dreamy musicality", commenting on its characteristically hesitant character by suggesting that it sounded as if it was "afraid of expressing itself too much".Florent Schmitt said of him: "Of all the musicians of his generation, he was perhaps the most talented, most original, but also the most modest". Peter Warlock dedicated his Capriol Suite to him.
Ladmirault was born in Nantes. A child prodigy, he learned piano, organ and violin from an early age. At the age of eight, he composed a sonata for violin and piano. At the age of fifteen, when still a student of the Nantes High School, he wrote a three-act opera Gilles de Retz. It was first performed on 18 May 1893.
He was admitted to the Paris Conservatoire to study under Gabriel Fauré, learning harmony under Antoine Taudou and counterpoint from André Gedalge. He orchestrated a few works by Fauré. Like his fellow students – Maurice Ravel, Florent Schmitt, Louis Aubert, Jean Roger-Ducasse, Georges Enesco – he had become well known before he left the Conservatory. In 1903, he wrote a Breton Suite in three movements and then the Brocéliande de matin. These two works were orchestral extracts from his second opera Myrdhin (Merlin), an epic work which he worked on from 1902-9, and continued to revise until 1921, but which has never been performed.
He also wrote Young Cervantes for small orchestra, Valse triste and Épousailles for piano and orchestra. The ballet La Prêtesse de Korydwenn (The Priestess of Ceridwen) was first performed at the Paris Opéra on 17 December 1926.