Michael Walter Wynne (born September 4, 1944) is an American politician and business executive and was the 21st United States Secretary of the Air Force.

In this role, Wynne was the principal staff assistant and adviser to the Secretary and Deputy Secretary of Defense for all matters relating to the Department of Defense Acquisition System, research and development, advanced technology, developmental test and evaluation, production, logistics, installation management, military construction, procurement, environmental security, and nuclear, chemical and biological matters.

In an Air Force brochure on the topic, Wynne wrote:[4] The reliance on imported oil continues to threaten the economic, financial and physical security of the nation while the use of domestic fossil fuels contributes to nationwide pollution problems.

[8] In June 2020, President Donald Trump announced Wynne's appointment to the Board of Visitors of the United States Air Force Academy.

Wynne has called on the United States to fund the development of both designs for the KC-X, a step that Dan Goure of the Lexington Institute says would add even more delay to the long overdue project.