Lisa Andersen (born March 8, 1969[citation needed]) is an American four-time world surfing champion.

At 16, because of her parents disapproval of her love of surfing, she decided to run away to Huntington Beach, California to pursue her passion and train with the best surfers in America.

Subsequently, she entered amateur competitions and won 35 National Scholastic Surfing Association trophies in eight months and, later, the US Championships at Sebastien Inlet in 1987.

She won her first pro event in 1990 in Australia, but she struggled with remaining focused throughout the competitive season with the multiple contests over the span of a surfing year.

After battling back injuries and giving birth to her second child, Mason, Andersen semi retired in 2001 and moved into a global brand ambassador role with Roxy.

Her first husband is the father of her daughter, and later Andersen married former professional baseball player Tim Shannon, on May 21, 2008, with whom she has a son.