Namesakes
Fictional Characters from Movies:
1 character
Marvin the Martian 1948 Haredevil Hare 
Fictional Characters from Song Titles:
1 character
(character) Marvin 2011 Marvins Room
Fictional Characters from Television:
1 character
Marvin Johnson 1987 Tour of Duty
Grammy Award Winners:
1 best new artist
(best new artist) Marvin Hamlisch 1975
Hall-of-Famers:
2 football, 1 baseball, 1 basketball
(football) Marv Levy 2001
(basketball) Mendy Rudolph (a.k.a. Marvin) 2007
(football) Marvin Harrison 2016
(baseball) Marvin Miller 2020
Nobel Prize Winners:
1 medicine
(medicine) Ralph M. Steinman (a.k.a. Marvin) 2011
Notable Actors and Entertainers:
1 actor
Walter Koenig (a.k.a. Marvin) 1936-
Notable Athletes:
1 football, 1 soccer
(football) Marvin Harrison 1972-
(soccer) Marvin Chávez 1983-
Notable Filmmakers:
1 screenwriter
Neil Simon (a.k.a. Marvin) 1927-2018
Notable Musicians:
2 musicians, 1 composer
Marvin Gaye 1939-1984
Marvin Hamlisch 1944-2012
Michael "Meat Loaf" Aday (a.k.a. Marvin) 1947-2022
Notable Writers:
1 author/playwright
Neil Simon (a.k.a. Marvin) 1927-2018
Olympic Medalists:
1 gold
(gold) Wilbur Thompson (a.k.a. Marvin) 1948 shot put
Rock and Roll Hall-of-Famers:
3 musicians
Marvin Gaye 1987
Marvin Isley 1992 The Isley Brothers
Marvin Junior 2004 The Dells