Namesakes
Fictional Characters from Traditional Tales:
1 character
Little Jack Horner English 
Hall-of-Famers:
1 ice hockey
(ice hockey) Reginald "Red" Horner 1965
Notable Musicians:
1 composer
James Horner 1953-2015
Notable Scientists and Inventors:
1 paleontologist
Jack Horner 1946-
Olympic Medalists:
1 bronze/gold
(bronze/gold) Silke Hörner 1988 swimming - 100 m breaststroke; swimming - 200 m breaststroke; swimming - 4x100 m medley relay
Saints:
1 blessed
Blessed Nicholas Horner ?-1590
Shakespearian Characters:
1 character
Thomas Horner Henry VI (2)