Cynthia Lee Woodhead (born February 7, 1964), commonly known by her family nickname "Sippy", is an American former competition swimmer, world champion, Olympic medalist, and former world record-holder.

[1] At the 1979 Pan American Games in San Juan, Puerto Rico, she received five gold medals.

Woodhead had qualified for six events at the 1980 Summer Olympics in Moscow, and was regarded to be among the favorites in the four individual distances, as she was ranked world number one in 100-, 200-, 400-, and 800-meter freestyle.

[1] Woodhead competed at the 1984 Summer Olympics in Los Angeles, where she received a silver medal in 200-meter freestyle, finishing behind compatriot Mary Wayte.

She was also a member of the U.S. team that held the 4×100-meter freestyle relay world record from 1978 to 1980.