| Birth Date: | 1919 12, df=yes |
| Birth Place: | Bad Kreuznach, Germany |
| Death Place: | Bad Kreuznach, Germany |
| Sport: | Artistic gymnastics |
| Club: | Bad Kreuznach |
| Show-Medals: | yes |
Jakob Kiefer (3 December 1919 – 18 January 1991) was a German gymnast. He competed at the 1952 and 1956 Summer Olympics in all artistic gymnastics events and finished in fourth and fifth place with the German team, respectively. Individually his best achievement was seventh place on the vault in 1956.
During his career he won 12 national titles, on the parallel bars (1950, 1954), pommel horse (1950, 1951 and 1954), rings (1950), vault (1950, 1954), horizontal bar (1950), floor (1950) and allround (1950, 1951).