Namesakes
Fictional Characters from Song Titles:
1 character
(character) Pearl Hart 2013 Pearl Hart 
Fictional Characters from Television:
4 characters
Jennifer Hart 1979 Hart to Hart
Jonathan Hart 1979 Hart to Hart
Colin Hart 2002 Everwood
Laynie Hart 2002 Everwood
Nobel Prize Winners:
1 economics
(economics) Oliver Hart 2016
Notable Actors and Entertainers:
4 actors, 1 comedian/actor
Robert Sterling (a.k.a. Hart) 1917-2006
Roxanne Hart 1952-
Miranda Hart 1972-
Melissa Joan Hart 1976-
Kevin Hart 1979-
Notable Athletes:
1 soccer, 1 wrestling
(wrestling) Bret Hart 1957-
(soccer) Joe Hart 1987-
Notable Writers:
1 author
Josephine Hart 1942-2011
Olympic Medalists:
1 gold
(gold) Eddie Hart 1972 4x100 m relay
Rock and Roll Hall-of-Famers:
1 musician
Mickey Hart 1994 The Grateful Dead
Saints:
1 blessed
Blessed William Hart ?-1583