Alan Alda Capt. Benjamin Franklin "Hawkeye" Pierce Actor Larry Linville Maj. Frank Burns Actor Mike Farrell Capt. B.J. Hunnicut Actor Gary Burghoff Cpl. Walter "Radar" O'Reilly Actor Loretta Swit Maj. Margaret Houlihan Actor Harry Morgan Col. Sherman Potter Actor Jamie Farr Cpl. Maxwell Klinger Actor William Christopher Father Francis Mulcahy Actor Richard Lee-Sung Cho Man Chin Guest Star Judy Farrell Nurse Able Guest Star Frances Fong Rosie Guest Star June Kyoko Lu Korean Woman Guest Star Jeff Maxwell Pvt. Igor Straminsky Guest Star Enid Kent Lt. Bigelow, RN Guest Star Don Eitner Captain Guest Star Sal Viscuso Patient John Guest Star Barry Cahill Helicopter Pilot Guest Star Lynne Marie Stewart Lt. Baker, RN Guest Star Kellye Nakahara Lt. Kellye Yamato, RN Guest Star James Lough Enlisted Man Guest Star