Namesakes
Fictional Characters from Song Titles:
1 character
(character) Casey Jones 1902; 1970 The Ballad of Casey Jones; Casey Jones 
Fictional Characters from Television:
3 characters
C. J. Parker (a.k.a. Casey) 1989 Baywatch
Casey Novak 1999 Law & Order: Special Victims Unit
Casey Cartwright 2007 Greek
Hall-of-Famers:
1 baseball
(baseball) Casey Stengel 1966
Notable Actors and Entertainers:
1 actor, 1 presenter
Casey Kasem 1932-2014
Casey Affleck 1975-
Notable Athletes:
1 tennis
(tennis) Casey Dellacqua 1985-
Olympic Medalists:
1 bronze, 1 gold
(gold) Casey FitzRandolph 2002 speed skating
(bronze) Casey Weathers 2008 baseball
Oscar Award Winners:
1 actor
(actor) Casey Affleck 2017 Manchester by the Sea