| Jack Van Mark | |
| Office: | Member of the Wyoming House of Representatives from Goshen County |
| Term Start: | January 10, 1961 |
| Term End: | January 9, 1967 |
| Preceded: | Oscar Yoder |
| Succeeded: | Floyd Pease |
| Birth Name: | Jack Bill Van Mark |
| Birth Date: | 4 July 1930 |
| Birth Place: | Torrington, Wyoming, U.S. |
| Death Place: | Torrington, Wyoming, U.S. |
| Party: | Republican |
| Occupation: | rancher |
| Education: | University of Wyoming (BS) |
| Signature: | Jack Van Mark signature.png |
Jack Bill Van Mark (July 4, 1930 – December 23, 2020) was an American politician in the state of Wyoming. He served in the Wyoming House of Representatives as a member of the Republican Party. He earned a Bachelor of Science degree from the University of Wyoming in geology.[1] [2] [3] [4]