| Robert L. Marion | |
| Allegiance: | United States |
| Branch: | United States Army |
| Serviceyears: | 1988–2024[1] |
| Rank: | Lieutenant General |
| Commands: | United States Army Acquisition Corps |
| Battles: | War in Afghanistan |
| Awards: | Defense Superior Service Medal Legion of Merit (2) |
Robert L. Marion is a retired United States Army lieutenant general who served as the principal military deputy to the Assistant Secretary of the Army for Acquisition, Logistics, and Technology and the Director of the United States Army Acquisition Corps from 2020 to 2024. He previously served as the Deputy Commander of the Combined Security Transition Command-Afghanistan.[2] [3] [4]