Frank Bruun Madsen (born 1962) is a Danish author, illustrator and comics artist. He is married to another Danish comics artist, Sussi Bech. Together they produce a weekly satirical comic strip "Eks Libris" for the literary supplement of Danish newspaper Weekendavisen. Frank is also the author of Kurt Dunder, an adventure comic created in the ligne claire style, and three comic albums with LEGOs science fiction character Jim Spaceborn.
Apart from comic books Frank Madsen is involved with illustration, storyboarding and animation projects for a great range of clients. In 1999 he storyboarded five sequences for the Danish animation feature Help! I'm a Fish. Since 2009 Frank has written children's books with his own characters like "Søren tror ikke på bøhmænd" (Sean does not believe in bogeymen) and "Snus Mus" (Nosey Mouse) about a mouse detective and his loyal secretary. All illustrated by Sussi Bech.