Namesakes
Fictional Characters from Movies:
1 character
Martin Riggs 1987 Lethal Weapon 
Fictional Characters from Television:
2 characters
Peter Riggs 2000 Strong Medicine
Nathan Riggs 2005 Grey's Anatomy
Notable Actors and Entertainers:
2 actors
Evelyn Brent (a.k.a. Riggs) 1895-1975
Chandler Riggs 1999-