"John Shannon" is the name of:

*John Shannon, American football player, defensive tackle for the Chicago Bears in 1988

*John Shannon (Australian politician) (1862-1926), Australian politician

*John Shannon (baseball), American baseball player, drafted from the Houston Cougars baseball/Houston Cougars

*John Shannon (musician) (born 1980), American modern folk guitarist, vocalist, and composer

*John Shannon (NASA Administrator), American space program administrator

*John Shannon (novelist) (born 1943), American author, lately of detective fiction

*John Shannon (sportscaster), Canadian sportscaster, co-host of Prime Time Sports

*John W. Shannon (born 1933), United States Under Secretary of the Army

More John Shannon on Wikipedia.