| Mary Glenski | |
| State House: | South Dakota |
| State: | South Dakota |
| District: | 15 |
| Term Start: | 2001 |
| Term End: | 2008 |
| Succeeded: | Incumbent |
| Party: | Democrat |
| Birth Date: | 31 August 1930 |
| Birth Place: | Denver, Colorado |
| Spouse: | Jim |
| Alma Mater: | Benedictine College, South Dakota State University |
| Profession: | Educator |
| Residence: | Sioux Falls, South Dakota |
Mary H. Glenski (born August 31, 1930) is a former Democratic member of the South Dakota House of Representatives, representing District 15 from 2001 to 2008. She did not run in 2008 because she had reached the term limits for South Dakota.