| Jack S. Curtis | |
| State Senate: | Missouri |
| District: | 30th |
| Term Start: | 1954 |
| Term End: | ? |
| Birth Date: | March 25, 1912 |
| Birth Place: | Hartville, Missouri |
| Death Date: | April 20, 2002 |
| Nationality: | American |
| Spouse: | Helen Stamate |
| Party: | Republican |
| Children: | 1 daughter |
| Alma Mater: | Drury College University of Missouri |
| Occupation: | Politician, city attorney, lawyer, Navy officer |
Jack S. Curtis (March 25, 1912 – April 20, 2002[1]) was an American politician from Springfield, Missouri, who served in the Missouri Senate. He served as city attorney for Springfield from 1941 until 1942. Curtis served as a lieutenant in the U.S. Navy Reserve from 1944 until 1946.[2]