Namesakes
Gregg Allman
(m) 1947-2017 
Notable Musicians
Rock and Roll Hall-of-Famers 1995 The Allman Brothers Band
Gregg Henry
(m) 1952-
Notable Actors and Entertainers (actor)
Gregg Rolie
(m) 1947-
Rock and Roll Hall-of-Famers 1998; 2017 Santana; Journey
Gregg L. Semenza
(m) 1956-
Nobel Prize Winners 2019 (medicine)
Gregg Sulkin
(m) 1992-
Notable Actors and Entertainers (actor)