Siemon Edward Top (born 1 January 1972 in Ommen) is a Dutch composer. Top studied violin and composition with Peter-Jan Wagemans at the Rotterdam Conservatoire. He won the Dutch prize for composition in 1999. He also studied composition with Klaas de Vries. After his graduation he studied music theory and analysis at King's College London. During the Dutch Music Days of 2004 he won the Henriëtte Bosmans Prize for his orchestra work Marble Sparks. He also won the 2003 Salvatore Martirano Memorial Composition Award at the University of Illinois for his String Quartet Nr. 1.