Stefán Gíslason (born 15 March 1980 in Fjarðabyggð) is an Icelandic retired footballer and manager who last played for Breiðablik in the Icelandic Premier League as a defensive midfielder and was last managing Lommel in the Belgian First Division B.
As a player, Gíslason was renowned for coupling physical power with great technique and is the younger brother of fellow international player Valur Gíslason.
In 2017, Gíslason starting his career as manager at Haukar, where he resigned at the end of the season.