Evald Thomsen (1913–1993) was a Danish fiddler and collector and promoter of Danish traditional music. Born in Siem by Skørping in Northern Jutland, Thomsen was taught fiddle from age 7, and played to local dances already as a young boy. He began to collect tunes and instruments. He founded the Rebild Fiddlers, and the Rebild museum of Traditional music. In 1931 he moved to Funen where his wife was from, and he stayed there to 1942 when he went back home to Himmerland.