Charles-Marie Widor (1844–1937) is best known as a towering figure in French organ music. His contributions to organ composition helped shape the instrument’s role in both liturgical settings and concert halls. As the chief organist at the prestigious Church of Saint-Sulpice in Paris for nearly 64 years, Widor was at the forefront of the French symphonic organ tradition. His works, rich in complexity and drama, continue to inspire organists worldwide. In this article, we explore five of Widor's greatest compositions that showcase his technical mastery, artistic depth, and lasting legacy.