Jacquelyn Joyce "Jackie" Klein (later Fie, born July 11, 1937) is a retired American artistic gymnast, coach, referee and official.

She competed at the 1956 Summer Olympics with the best individual result of 49th place in the balance beam.

[2] Klein retired soon after the Olympics due to a back injury.

In 1959, she earned a Bachelor of Science degree from Northwestern University,[3] and then had a long career as a physical education teacher, gymnastics coach, judge and administrator.

Since the 1970s, she was a member of the International Federation of Gymnastics and was named its honorary vice-president upon her retirement in 2004.