Alan Alda Capt. Benjamin Franklin "Hawkeye" Pierce Actor Harry Morgan Col. Sherman Potter Actor Jamie Farr Cpl. Maxwell Klinger Actor Mike Farrell Capt. B.J. Hunnicut Actor Gary Burghoff Cpl. Walter "Radar" O'Reilly Actor Loretta Swit Maj. Margaret Houlihan Actor David Ogden Stiers Maj. Charles Emerson Winchester III Actor William Christopher Father Francis Mulcahy Actor Greg Mullavey Capt. Tom Greenleigh Guest Star David Dean Private Sutton Guest Star Frank Pettinger Anesthetist Guest Star Phyllis Katz Triage Nurse Guest Star Patricia Stevens Lt. Baker, RN Guest Star