Karen Patricia Moe Humphreys (born January 22, 1953), née Karen Patricia Moe, is an American former competition swimmer, Olympic gold medalist, and former world record-holder.

At the 1972 Summer Olympics in Munich, Germany, she won the gold medal in the women's 200-meter butterfly event.

She was inducted into the International Swimming Hall of Fame as an "Honor Swimmer" in 1992.

[2] In 1978, Moe became the head coach of the California Golden Bears women's swim team at the University of California, Berkeley, and served in that position until 1992.

[3] In 1987, she was named the NCAA Division I Women's Swimming Coach of the Year.