Donna Jean Thatcher Godchaux-MacKay (1947–2025) was an American singer best known for her impactful seven-year tenure with the iconic rock band the Grateful Dead, from 1972 to 1979, alongside her first husband, Keith Godchaux. Prior to joining the Dead, she had a notable career as a session vocalist in Muscle Shoals, contributing backing vocals to number one hits such as Percy Sledge's "When a Man Loves a Woman" (1966) and Elvis Presley's "Suspicious Minds" (1969).

After leaving the Grateful Dead, she continued performing with groups like the Heart of Gold Band and later formed the Donna Jean Godchaux Band in 2006, remaining active in music. Her significant contributions were recognized with her induction into the Rock and Roll Hall of Fame in 1994 as a member of the Grateful Dead, and the Alabama Music Hall of Fame in 2016. Godchaux passed away on November 2, 2025, at the age of 78, following a battle with cancer.