Sophus Windeløv Kirkeby (born 1 September 1979 in Copenhagen) is a Danish actor.

Kirkeby graduated from the School of Acting at Odense Theater in 2007, where he has since had several roles. He is the son of painter Per Kirkeby and film producer Vibeke Windeløv and has since 2008 been married to actress Mille Hoffmeyer Lehfeldt.