Mark T. Simerly is a United States Army lieutenant general who serves as the director of the Defense Logistics Agency.

He previously served as the commanding general of the United States Army Combined Arms Support Command, United States Army Sustainment Center of Excellence and Fort Gregg-Adams from 2021 to 2023.

[1] He previously served as the Director of Logistics of the United States Forces Korea and Deputy Director of Logistics of the United Nations Command and ROK/US Combined Forces Command and, prior to that, as the Commanding General of the 19th Expeditionary Sustainment Command.

[2][3][4][5][6][7] In March 2023, Simerly was nominated and confirmed for promotion to lieutenant general.

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