Denise Austin (born February 13, 1957) is an American fitness and exercise expert, author, columnist and instructor. She is also a member of the President's Council on Physical Fitness and Sports.
Austin was born Denise Katnich in San Pedro, CA. She started gymnastics at the age of 12, which led to an athletic scholarship to the University of Arizona.
She is married to sports attorney Jeff Austin, with whom she has two daughters: Kelly (born 1990) and Katie (born 1993). Her sister-in-law is U.S. tennis champion Tracy Austin.