Hanna Miluska (born 29 May 1984) is a Swiss former swimmer, who specialized in freestyle events and open water marathon. She is a two-time medalist in the 5 km open water at the World and European Championships. Miluska is also a member of Beider Basel Swimming Club (German: Schwimmverein Beider Basel), and is trained by her long-time coach Axel Mitbauer. She is also the daughter of former rower Ivan Miluška, who played for Czechoslovakia in the men's pairs at the 1968 Summer Olympics in Mexico City.