Stefan Karlsson

• Stefan Karlsson (badminton), Swedish badminton player
• Stefan Karlsson (footballer), Swedish footballer
• Stefan Karlsson (professor), professor of molecular medicine and gene therapy
• Stefan Karlsson (snowboarder), Swedish snowboarder
• Stefan Karlsson, a player for the Sweden national bandy team
• Stefan Karlsson, Retired Swedish Army tank company commander, Director of the Swedish Tank Museum Arsenalen since 2011.