Namesakes
Fictional Characters from Television:
2 characters
Lindsey McDonald 1999 Angel 
Ronald "Mac" McDonald 2005 It's Always Sunny in Philadelphia
Hall-of-Famers:
1 football, 1 ice hockey
(ice hockey) Lanny McDonald 1992
(football) Tommy McDonald 1998
Nobel Prize Winners:
1 physics
(physics) Arthur B. McDonald 2015
Notable Actors and Entertainers:
2 actors
Christopher McDonald 1955-
Audra McDonald 1970-
Notable Athletes:
1 ice hockey
(ice hockey) Lanny McDonald 1953-
Notable Businesspeople:
2 businesspersons
Maurice McDonald 1902-1971
Richard McDonald 1909-1998
Notable Journalists:
1 news presenter
(news presenter) Trevor McDonald 1939-
Notable Scientists and Inventors:
1 physicist
Arthur B. McDonald 1943-
Olympic Medalists:
3 silver, 2 bronze, 1 bronze/silver/gold, 1 gold/silver
(gold/silver) Pat McDonald 1912; 1920 shot put; shot put - both hands; 56 lb weight throw
(silver) Andrew McDonald 1984 water polo
(bronze) Julie McDonald 1988 swimming - 800 m freestyle
(bronze) Michael McDonald 1996; 2000 4x400 m relay
(bronze/silver/gold) Beverly McDonald 2000; 2004 200 m; 4x100 m relay
(silver) Emma Randall (a.k.a. McDonald) 2008 basketball
(silver) Rusheen McDonald 2016 4x400 m relay
Other Fictional Characters:
1 character
Ronald McDonald 1963 corporate mascot
Rock and Roll Hall-of-Famers:
2 musicians
Hugh McDonald 2018 Bon Jovi
Michael McDonald 2020 The Doobie Brothers