Namesakes
Dennis
(m) 
Shakespearian Characters As You Like It
Dennis Creevey
(m)
Harry Potter Characters
Dionysius Fugishima
(a.k.a. Dennis) (m) ?-1622
Saints
Dan Brouthers
(a.k.a. Dennis) (m) 1858-1932
Hall-of-Famers 1945 (baseball)
Notable Athletes (baseball)
Dennis Gabor
(m) 1900-1979
Nobel Prize Winners 1971 (physics)
Notable Scientists and Inventors
William Gargan
(middle name Dennis) (m) 1905-1979
Notable Actors and Entertainers (actor)
Dennis O'Keefe
(m) 1908-1968
Notable Actors and Entertainers (actor)
Dennis Morgan
(m) 1908-1994
Notable Actors and Entertainers (actor)
D. J. Enright
(a.k.a. Dennis) (m) 1920-2002
Notable Writers
Dennis Weaver
(m) 1924-2006
Notable Actors and Entertainers (actor)
Dick Hanley
(middle name Dennis) (m) 1936-2022
Olympic Medalists 1956 swimming - 4x200 m freestyle relay (silver)
Dennis Hopper
(m) 1936-2010
Notable Actors and Entertainers (actor)
Dennis Banks
(m) 1937-2017
Notable Activists and Revolutionaries
Denny Doherty
(m) 1940-2007
Rock and Roll Hall-of-Famers 1998 The Mamas & the Papas
Dennis Ritchie
(m) 1941-2011
Notable Scientists and Inventors
Dennis Edwards
(m) 1943-2018
Notable Musicians
Rock and Roll Hall-of-Famers 1989 The Temptations
Robert Crumb
(middle name Dennis) (m) 1943-
Notable Artists
Dennis Farina
(m) 1944-2013
Notable Actors and Entertainers (actor)
Denny McLain
(m) 1944-
Most Valuable Players 1968 baseball
Dennis Franz
(m) 1944-
Emmy Award Winners 1994; 1996; 1997; 1999 NYPD Blue (actor)
Notable Actors and Entertainers (actor)
Dennis Wilson
(m) 1944-1983
Rock and Roll Hall-of-Famers 1988 The Beach Boys
Dennis Dunaway
(m) 1946-
Rock and Roll Hall-of-Famers 2011 Alice Cooper
Dennis Waterman
(m) 1948-2022
Notable Actors and Entertainers (actor)
Dennis the Menace
(m)
Other Fictional Characters 1951 comic strip
Dennis Boutsikaris
(m) 1952-
Notable Actors and Entertainers (actor)
Dennis Miller
(m) 1953-
Notable Actors and Entertainers (comedian)
Dennis Quaid
(m) 1954-
Notable Actors and Entertainers (actor)
Dennis Haysbert
(m) 1954-
Notable Actors and Entertainers (actor)
Dennis Johnson
(m) 1954-2007
Hall-of-Famers 2010 (basketball)
Notable Athletes (basketball)
Dennis Eckersley
(m) 1954-
Hall-of-Famers 2004 (baseball)
Most Valuable Players 1992 baseball
Notable Athletes (baseball)
Dave Wilson
(middle name Dennis) (m) 1960-
Olympic Medalists 1984 swimming - 100 m backstroke (silver)
Dennis Rodman
(m) 1961-
Hall-of-Famers 2011 (basketball)
Notable Athletes (basketball)
Dennis Mitchell
(m) 1966-
Olympic Medalists 1992; 1996 100 m; 4x100 m relay (bronze/gold/silver)
Dennis Bergkamp
(m) 1969-
Notable Athletes (soccer)
Dennis Blake
(m) 1970-
Olympic Medalists 1996 4x400 m relay (bronze)
Dennis van der Geest
(m) 1975-
Olympic Medalists 2004 judo (bronze)
Dennis
(m)
Hurricanes and Tropical Storms 1981 (hurricane)
Dennis
(m)
Hurricanes and Tropical Storms 1987 (storm)
Dennis
(m)
Hurricanes and Tropical Storms 1993 (storm)
Dennis Klinsmann
(m)
Fictional Characters from Television 1994 Heartbreak High
Dennis Finch
(m)
Fictional Characters from Television 1997 Just Shoot Me!
Dennis
(m)
Hurricanes and Tropical Storms 1999 (hurricane)
Dennis
(m)
Hurricanes and Tropical Storms 2005 (hurricane)
Dennis Reynolds
(m)
Fictional Characters from Television 2005 It's Always Sunny in Philadelphia