Kaye Marie Hall (born May 15, 1951), later known by her married name Kaye Greff, is an American former competition swimmer, two-time Olympic champion, and former world record-holder in two events.
Hall was born in Tacoma, Washington, and attended Woodrow Wilson High School in Tacoma.
She trained with the Tacoma Swim Club with coach Dick Hannula.
Hall made her international debut at the 1967 Pan American Games in Winnipeg, where she won a silver medal in the 100-meter backstroke behind Canadian gold medalist Elaine Tanner.
In December 1967, she became the first woman to swim the 100-yard backstroke in under one minute.