Guillaume Landre (February 24, 1905 in The Hague - November 6, 1968 in Amsterdam) was a Dutch composer of operas, symphonies, and chamber music. His father, Willem Landre was also a composer and he studied under him. He also studied under Willem Pijper who had some influence on Landre's early works. Later in his career Landre experimented with serial techniques and jazz influences. From 1950 to 1962 he acted as chairman of the Dutch Society of Composers. In addition to composing he also studied and taught law.