| Frank Rydzewski | |
| Birth Place: | Chicago, Illinois, U.S. |
| Death Date: | October 1979 (aged 87) |
| Death Place: | Cook County, Illinois, U.S. |
| Height Ft: | 6 |
| Height In: | 1 |
| Weight Lbs: | 220 |
| Position: | Center, tackle, guard |
| College: | Notre Dame |
| Pfr: | RydzFr20 |
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| Number: | 17,99 |
Franciszek Xavier "Frank" Rydzewski Jr. (November 16, 1892 – October 1979) was an American football player. He played seven seasons in the National Football League (NFL) with the Chicago Tigers (1920), Cleveland Tigers (1920), Hammond Pros (1920, 1922–1926), Chicago Cardinals (1921), Chicago Bears (1923), and Milwaukee Badgers (1925). Prior to joining the NFL, Rydzewski played college football at the University of Notre Dame from 1915 to 1917.[1] He earned All-American honors in 1917. He served in the Army during World War I.[2]