Known for Acting

Frank Shannon was an Irish-born stage and screen performer. He had his film debut in The Prisoner of Zenda (1913). He is most fondly remembered as the brilliant Dr. Zarkov in the three Flash Gordon serials.
1938
as Mac (uncredited)
1943
as Dr. Hayden
1940
as Sheriff
1935
as Police Chief at Lodge (uncredited)
1939
as Old Man (uncredited)
1936
as Dr. Hans Zarkov
1936
as Mr. Holt
1946
as Train Station Gateman (Uncredited)
1940
as Second Man with California Gold News
1938
as Dr. Zarkov
1940
as Sweeney
1940
as Mr. O'Malley - Captain of the Nova Scotian (uncredited)
1936
as Captain Stafford
1936
as Chaplain (uncredited)
1940
as Dr. Zarkov
1940
as Construction Supervisor at Elevator
1935
as Agent Joe
1938
as Dr. Hans Zarkov
1938
as Police Sergeant at Jail (Uncredited)
1966
as Dr. Hans Zarkov (archive footage)