Major General Michael Barry Ryan, is a retired senior officer of the Australian Army and a military strategist. Ryan served as Commander of the Australian Defence College 2018 to 2022, became a Senior Fellow for Military Studies at the Lowy Institute in 2024, and is a Adjunct Fellow of the Center for Strategic and International Studies. He is a commentator on contemporary military affairs, including the Russo-Ukrainian War, Asia/Pacific military strategy, and military matters in the Middle East.
Ryan graduated from the Royal Military College, Duntroon, in 1989 and was commissioned into the Royal Australian Engineers. He was appointed a Member of the Order of Australia in the 2008 Australia Day Honours. Ryan retired from the Australian Army as a major general in 2022, having served as Commander of the Australian Defence College from 2018.
Ryan is the author of several books, as well as significant reports and reviews during his military career.