Michael L. "Mikey" Weinstein is an attorney, businessman and former Air Force officer. He is founder and president of the Military Religious Freedom Foundation (MRFF) and author of With God on Our Side: One Man's War Against an Evangelical Coup in America's Military (ISBN 978-0312361433) in which he describes his fight against alleged coercive evangelistic practices by some members of the military.

Weinstein graduated from the United States Air Force Academy in 1977 and later served as a Judge Advocate General (JAG) for ten years. He also spent over three years in the West Wing of the Reagan White House as legal counsel in the White House. In his final position there, Weinstein was named the Committee Management Officer of the much-publicized Iran-Contra Investigation in his capacity as Assistant General Counsel of The White House Office of Administration, Executive Office of the President of the United States.

In October 2005, Weinstein sued the United States Air Force for permitting proselytization by evangelical Christian officers. U.S. District Judge James A. Parker, who presided over Weinstein v. U.S. Air Force, dismissed the case, stating, "No Plaintiff claims to have personally experienced any of the things described under “Factual Allegations"... while at the Academy or after leaving the Academy." "The only fair reading of Plaintiffs’ factual allegations limits them to practices and events at the Academy and policies as they affect persons, other than Plaintiffs, at the Academy." "Not a single Plaintiff has alleged any personal factual situation that has allegedly impinged on that Plaintiff’s constitutional rights since the Plaintiff left the Academy."