Michael Kirby

• Michael Kirby (judge), retired Australian High Court judge
• Michael J. L. Kirby, Canadian politician and chair of the Mental Health Commission of Canada
• Michael G. Kirby, American politician
• Michael Kirby (artist), American street artist
• Michael Kirby (figure skater), Canadian figure skater and actor
• Michael Kirby (theater), professor of drama at New York University
• Michael [David Kirby], U.S. diplomat and former ambassador to Moldova and Serbia