| Markham L. Gartley | |
| Office1: | Secretary of State of Maine |
| Governor1: | James B. Longley |
| Term Start1: | 1975 |
| Term End1: | 1978 |
| Predecessor1: | Joseph T. Edgar |
| Successor1: | Rodney S. Quinn |
| Birth Date: | 16 May 1944 |
| Birth Place: | Louisville, Kentucky, U.S. |
| Party: | Democratic |
| Residence: | Greenville, Maine |
| Rank: | Lieutenant |
| Branch: | United States Navy |
| Serviceyears: | 1966–1973 |
| Battles: | Vietnam War |
Markham Ligon Gartley (born May 16, 1944) served as Secretary of State of Maine from 1975 to 1978.[1] He is a veteran of the Vietnam War as a lieutenant in the United States Navy and former prisoner of war.[2] Gartley was born in Louisville, Kentucky to Gerald and Minnie-Lee (née Ligon) Gartley. He earned a Bachelor of Science degree in physics from the Georgia Institute of Technology in 1966.[3]