Namesakes
Fictional Characters from Books:
1 character
Irene Adler 1891 A Scandal in Bohemia 
Fictional Characters from Television:
1 character
Grace Adler 1998 Will & Grace
Notable Actors and Entertainers:
1 actor
Joe Adler 1993-
Notable Philosophers and Thinkers:
1 psychologist
Alfred Adler 1870-1937
Notable Politicians and Statespeople:
1 politician
Shulamit Aloni (a.k.a. Adler) 1928-2014
Olympic Medalists:
1 bronze, 1 silver
(bronze) Margarete Adler 1912 swimming - 4x100 m freestyle relay
(silver) Egon Adler 1960 cycling
Rock and Roll Hall-of-Famers:
1 musician
Steven Adler 2012 Guns N' Roses