Thomas Stangassinger (born 15 September 1965) is an Austrian former alpine skier.
Throughout the 1990s, he belonged to the international slalom elite. He won a silver medal in the World Ski Championships in Saalbach-Hinterglemm and a bronze medal in the World Ski Championships in Morioka. His career highlight came when he won the slalom competition at the 1994 Olympics in Lillehammer.