Michael Kirby is an actor, best known for the films Hell's Heart, The Diamond Nose, Chase the Slut, and Connected. Other film credits include Rickover: The Birth of Nuclear Power, Benevolence, Clark, and Passing Normal. 

Television credits include Shane Birdsill on FOX's Boston Public.

Theatre credits include Off-Broadway, as Lord Rivers in Richard III: Born With Teeth (Jewel Box Theatre); and regionally, as Lieutenant/Kapo/SS Guard in Bent and Nicholas Beckett/Sergeant Match in What the Butler Saw (Mark Taper Forum); Henry Prince of Wales in Henry IV, Part 1 (Antaeus Theatre); Jim O'Connor in The Glass Menagerie (John D. Archbold Theatre); Dauphine in Epicene or The Silent Woman (Directions Theatre); and Bardolph in The Merry Wives of Windsor, Benvolio in Romeo and Juliet, French Lord in All's Well That Ends Well, Gil Harrison in The American Plan, and Clerk in Chekhov X 4 (Old Globe Theatre).