Alan Alda Capt. Benjamin Franklin "Hawkeye" Pierce Actor McLean Stevenson Lt. Col. Henry Blake Actor Wayne Rogers Capt. John McIntyre Actor Larry Linville Maj. Frank Burns Actor Gary Burghoff Cpl. Walter "Radar" O'Reilly Actor Loretta Swit Maj. Margaret Houlihan Actor William Christopher Father Francis Mulcahy Actor Jamie Farr Cpl. Maxwell Klinger Guest Star Patricia Stevens Lt. Baker, RN Guest Star Bobbie Mitchell Lt. Murphy, RN Guest Star Kellye Nakahara Lt. Able, RN Guest Star