Roberta Jonay (October 15, 1921 – April 19, 1976) was an American film actress, best known for her roles in Suddenly, It's Spring (1947) and The Emperor Waltz (1948). She created the role of 'Jennie' in Rodgers and Hammerstein's 'Allegro' on Broadway in 1947.
Jonay married actor Judson Pratt in 1950, they had three children together. She died in 1976 at the age of 54 from cancer in Tarzana, California, and was buried in Forest Lawn Memorial Park, Hollywood Hills, California.