Susan M. Johnson (born August 28, 1969), later known by her married name Susan Lipscomb, is an American former competition swimmer who represented the United States at the 1988 Summer Olympics in Seoul.

She competed in the B Final of the women's 100-meter breaststroke and finished with the thirteenth-best time of all competitors (1:11.08).

She resumed competitive swimming at Southern Methodist University in 1990.

She was the first female in the history of Southern Methodist University to win first place in a swimming event.

This biographical article related to a United States swimmer is a stub.