Namesakes
Fictional Characters from Movies:
1 character
Emmett "Doc" Brown 1985 Back to the Future 
Hall-of-Famers:
1 basketball
(basketball) Branch McCracken (a.k.a. Emmett) 1960
Notable Actors and Entertainers:
2 actors
Robert Harron (a.k.a. Emmett) 1893-1920
William Smith (a.k.a. Emmett) 1933-2021
Olympic Medalists:
1 gold, 1 silver
(gold) Emmett Toppino 1932 4x100 m relay
(silver) Clifton Cushman (a.k.a. Emmett) 1960 400 m hurdles