| Ralph Olsen | |
| Number: | 19 |
| Position: | Defensive end |
| Birth Date: | 10 April 1924 |
| Birth Place: | Salt Lake City, Utah, U.S. |
| Death Place: | Fruit Heights, Utah, U.S. |
| Height Ft: | 6 |
| Height In: | 4 |
| Weight Lbs: | 220 |
| High School: | West (Salt Lake City, Utah) |
| College: | Utah |
| Draftyear: | 1947 |
| Draftround: | 32 |
| Draftpick: | 297 |
| Pastteams: | |
| Pastcoaching: |
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| Statlabel1: | Games played |
| Statvalue1: | 4 |
Ralph Kenneth Olsen (April 10, 1924 – November 28, 1994) was an American football player and coach. He played professional as defensive end in the National Football League (NFL). Olsen was drafted by the Green Bay Packers in the 32nd round of the 1947 NFL draft and played with the team during the 1949 NFL season.[1] He served as the head football coach at the Montana State School of Mines—now known as Montana Technological University from 1952 to 1956.