Thomas Lars Wassberg (born 27 March 1956) is a Swedish former cross-country skier. A fast skating style – push for every leg – is still called "Wassberg" after him in several countries. Wassberg's skiing idols when growing up were Sixten Jernberg and Oddvar Brå. He has described his mental strength and physical fitness as his greatest abilities as a skier, with his main weakness being a lack of sprinting ability.

After retiring from competitions Wassberg worked as a sports reporter for Swedish Radio and a cross-country skiing coach for his club Åsarna IK. In 2009 he appeared on Swedish television in the show contests Mästarnas mästare, and in 2016 participated in Let's Dance 2016 which was broadcast on TV4. In the 2010s he oversaw the preparation of ski tracks for Åsarna IK, organized bird hunting events for tourists and worked as a forester.