Namesakes
John Flanagan
(m) 1868-1938 
Olympic Medalists 1900; 1904; 1908 56 lb weight throw; hammer throw (silver/gold)
Fionnula Flanagan
(f) 1941-
Notable Actors and Entertainers (actor)
Tommy Flanagan
(m) 1965-
Notable Actors and Entertainers (actor)
Dennis O'Keefe
(a.k.a. Flanagan) (m) 1908-1968
Notable Actors and Entertainers (actor)
Shalane Flanagan
(f) 1981-
Olympic Medalists 2008 10000 m (bronze)
Ralph Flanagan
(m) 1918-1988
Olympic Medalists 1936 swimming - 4x200 m freestyle relay (silver)