Alex Albert Beehler is a professor, lawyer, and former senior American government official, who served as the Assistant Secretary of the Army for Installations, Energy and Environment between 2019 and 2021.

Subsequently, he spent 25 years practicing law, both in a private environment, and across a number of federal agencies including the Department of Justice's Environmental Enforcement Section.

[1] Prior to joining the Department of Defense, Beehler served concurrently as the Director of Environmental and Regulatory Affairs at Koch Industries, and as the Vice President for Environmental Projects at the Charles G. Koch Foundation.

[3] After leaving the DoD Beehler worked for FaegreBD Consulting, providing environment, energy, and sustainability advice to government agencies;[1] however in 2018, he was nominated to serve as the 8th Assistant Secretary of the Army for Installations, Energy and Environment within the Department of the Army, and was sworn in on January 20, 2019.

[3] He served in this role until the beginning of Joe Biden's presidency.