Florian Mühlstein (born November 12, 1990) is an Austrian professional ice hockey defenseman currently an unrestricted free agent.
He most recently played for EC VSV of the Austrian Hockey League (EBEL).
He has previously played in the EBEL for EC KAC and EC Red Bull Salzburg.
After winning the 2014–15 Championship with Salzburg, Mühlstein returned to his hometown in Villach, signing a one-year contract with EC VSV on March 4, 2015.He participated with the Austrian national team at the 2015 IIHF World Championship.