Liam Patrick Hardy (born 1973) is an American lawyer who serves as a judge of the United States Court of Appeals for the Armed Forces.

Hardy earned a Bachelor of Science in Engineering, magna cum laude, in May 1995 from Princeton University majoring in mechanical and aerospace engineering, a Master of Science in aeronautics and astronautics in June 1996 from Stanford University, and a Juris Doctor, cum laude, in May 2008 from Georgetown University Law Center, where he served as the Senior Administrative Editor of The Georgetown Law Journal.

Prior to joining the United States Department of Justice, he was a litigation partner in the Washington, D.C. office of Kirkland & Ellis.

[1] On May 6, 2020, President Trump announced his intent to nominate Hardy to serve as a Judge of the United States Court of Appeals for the Armed Forces.

President Trump nominated Hardy to the seat being vacated by Judge Margaret A. Ryan, whose term expired on July 31, 2020.