Namesakes
Bishops of Rome and the Popes:
16 popes, 2 antipopes
Gregory I the Great 590-604 
Gregory II 715-731
Gregory III 731-741
Gregory IV 827-844
Gregory V 996-999
Gregory 1012
Gregory VI 1045-1046
Gregory VII 1073-1085
Gregory 1118-1121
Gregory VIII 1187
Gregory IX 1227-1241
Gregory X 1271-1276
Gregory XI 1370-1378
Gregory XII 1406-1415
Gregory XIII 1572-1585
Gregory XIV 1590-1591
Gregory XV 1621-1623
Gregory XVI 1831-1846
Fictional Characters from Television:
7 characters
Greg Brady 1969; 1990 The Brady Bunch; The Bradys
Greg Medavoy 1993 NYPD Blue
Greg Pratt 1994 ER
Greg Montgomery 1997 Dharma & Greg
David Phillips (middle name Gregory) 2000 CSI: Crime Scene Investigation
Greg Sanders 2000 CSI: Crime Scene Investigation
Gregory House 2004 House
Hall-of-Famers:
1 baseball, 1 ice hockey
(ice hockey) Steve Yzerman (middle name Gregory) 2009
(baseball) Greg Maddux 2014
Harry Potter Characters:
2 characters
Gregory Goyle Jr.
Gregory Goyle Sr.
Notable Actors and Entertainers:
15 actors, 1 comedian/actor
Gregory Peck 1916-2003
Gregory Sierra 1937-2021
Gregory Hines 1946-2003
Greg Evigan 1953-
Greg Germann 1958-
Greg Kinnear 1963-
Greg Wise 1966-
Greg Davies 1968-
Greg Vaughan 1973-
Jonathan Brandis (middle name Gregory) 1976-2003
Gregory Smith 1983-
Greg Finley 1984-
Billy Magnussen (middle name Gregory) 1985-
Ethan Peck (middle name Gregory) 1986-
Shad "Bow Wow" Moss (middle name Gregory) 1987-
Noah Centineo (middle name Gregory) 1996-
Notable Athletes:
2 soccer, 1 baseball, 1 cricket, 1 diving, 1 football, 1 golf, 1 ice hockey, 1 rugby, 1 tennis
(golf) Greg Norman 1955-
(diving) Gregory Louganis 1960-
(cricket) Merv Hughes (middle name Gregory) 1961-
(ice hockey) Steve Yzerman (middle name Gregory) 1965-
(baseball) Greg Maddux 1966-
(tennis) Greg Rusedski 1973-
(rugby) Greg Holmes 1983-
(soccer) Medhi Lacen (middle name Gregory) 1984-
(soccer) Gregory van der Wiel 1988-
(football) Greg Hardy 1988-
Notable Musicians:
3 musicians, 1 singer
Gregg Allman 1947-2017
Greg K. 1965-
Rob Bourdon (middle name Gregory) 1979-
Shad "Bow Wow" Moss (middle name Gregory) 1987-
Notable Philosophers and Thinkers:
1 historian, 1 philosopher
Gregory of Tours c. 538-594
Hryhorii Skovoroda (a.k.a. Gregory) 1722-1794
Olympic Medalists:
9 silver, 4 bronze, 2 gold, 1 bronze/silver, 1 gold/bronze, 1 silver/gold
(gold) Greg Bell 1956 long jump
(silver) Greg Buckingham 1968 swimming - 200 m medley
(bronze/silver) Greg Rogers 1968 swimming - 4x100 m freestyle relay; swimming - 4x200 m freestyle relay
(bronze) Greg Brough 1968 swimming - 1500 m freestyle
(bronze) Brian Job (middle name Gregory) 1968 swimming - 200 m breaststroke
(bronze) Peter Asch (middle name Gregory) 1972 water polo
(silver) Greg Joy 1976 high jump
(gold) Phil Hubbard (middle name Gregory) 1976 basketball
(silver) Greg Foster 1984 110 m hurdles
(silver) Greg Fasala 1984 swimming - 4x100 m freestyle relay
(silver) Greg Meghoo 1984 4x100 m relay
(silver) Greg Boyer 1988 water polo
(silver/gold) Gregory Louganis 1976; 1984; 1988 diving - platform; diving - springboard
(silver) Greg Burgess 1992 swimming - 200 m medley
(bronze) Greg Haughton 1996; 2000 400 m; 4x400 m relay
(silver) Grégory Mallet 2008; 2012 swimming
(silver) Grégory Baugé 2008; 2012 cycling - track
(gold/bronze) Greg Rutherford 2012; 2016 long jump
Oscar Award Winners:
1 actor
(actor) Gregory Peck 1963 To Kill a Mockingbird
Rock and Roll Hall-of-Famers:
2 musicians
Gregg Allman 1995 The Allman Brothers Band
Greg Hawkes 2018 The Cars
Saints:
16 saints, 2 blessed
Saint Gregory Thaumaturgus 213-270
Saint Gregory of Nazianzus 329-389
Saint Gregory the Enlightener ?-330
Saint Gregory of Nyssa 335-395
Saint Gregory of Tours c. 538-594
Saint Gregory ?-539
Saint Gregory the Great c. 540-604
Saint Gregory ?-603
Saint Gregory II 669-731
Saint Gregory of Utrecht 703-776
Saint Gregory III ?-741
Saint Grigol of Khandzta (a.k.a. Gregory) 759-861
Saint Gregory VII c. 1020-1085
Saint Gregory ?-1044
Blessed Gregory X 1210-1276
Blessed Gregorio of Verucchio (a.k.a. Gregory) 1225-1343
Saint Gregory of Tragurio ?-1369
Saint Gregorio Barbarigo (a.k.a. Gregory) 1625-1697
Shakespearian Characters:
1 character
Gregory Romeo and Juliet