William Stanford Davis (born August 7, 1951) is an American actor. He is best known for his role as school custodian Mr. Johnson on the ABC sitcom Abbott Elementary (2021–present).
Known for The Big Bang Theory 2007 Bones 2005 Shameless 2011 City of Angels 1998 ★ 6.7 Diary of a Wimpy Kid: The Last Straw 2025
Troopmaster Barrett (voice) Series ★ 5.7 Side Quest 2025
Earl Series ★ 7.5 Abbott Elementary 2021
Mr. Johnson Series ★ 7.7 Swagger 2021
Coach Max Series ★ 7.3 Snowpiercer 2020
Mr. Riggs Series ★ 7.2 Perry Mason 2020
Daniel Madison ★ 6.7 Adopt a Highway 2019
Hatty Series ★ 7 Truth Be Told 2019
Agathia ★ 6.8 Please Stand By 2018
Creed (uncredited) Series ★ 7.6 Light as a Feather 2018
Old Man ★ 5.3 Handsome: A Netflix Mystery Movie 2017
Lester ★ 6.4 Cardboard Boxer 2016
Jazzy ★ 4.7 Guns for Hire 2015
Liquor Store Clerk Series ★ 8.3 Chicago Med 2015
Ed Brennan Series ★ 7.5 Ray Donovan 2013
Potato Pie Series ★ 7.1 The Finder 2012
Earl Series ★ 8.2 Shameless 2011
Conrad Series ★ 7.5 Harry's Law 2011
Kareem Anderson ★ 5.7 Barry Munday 2010
Greens Keeper ★ 6 Across the Hall 2009
Custodian Series ★ 7.6 The Middle 2009
Projectionist Series ★ 7.5 Terminator: The Sarah Connor Chronicles 2008
Pastor Jonas ★ 5.1 Hallowed Ground 2007
Truck Driver Series ★ 7.9 The Big Bang Theory 2007
Dry Cleaner Series ★ 7.4 Saving Grace 2007
Group member at party Series ★ 7.5 Studio 60 on the Sunset Strip 2006
Floor Manager Series ★ 6.7 Shark 2006
Sonny Gore ★ 6.8 A Lot Like Love 2005
Priest Series ★ 7.7 My Name Is Earl 2005
Neighbor Series ★ 8.2 Bones 2005
Floyd Barber Series ★ 7.8 The Closer 2005
Homeless Man Series ★ 8.3 It's Always Sunny in Philadelphia 2005
Mr. Johnson Series ★ 7.9 Desperate Housewives 2004
William Series ★ 7.7 Cold Case 2003
Deante Series ★ 8.2 The Shield 2002
Deon ★ 6.8 James Dean 2001
Train Conductor Series ★ 7 The Guardian 2001
Brian ★ 5.8 The Prophecy 3: The Ascent 2000
Portly Coroner Series ★ 7.6 CSI: Crime Scene Investigation 2000
Mechanic Series ★ 6.9 The District 2000
Mr. Gillis Series ★ 8 Curb Your Enthusiasm 2000
Chulu Porter Series ★ 7.8 Angel 1999
Security Guard ★ 6.3 Primary Colors 1998
Jack Mandela Washington ★ 6.8 City of Angels 1998
Construction Foreman ★ 5.7 Running Time 1997
Buzz Series ★ 6.5 Ally McBeal 1997
Jim Series ★ 7.6 The Practice 1997
Clarence Barnett Series ★ 7.2 Touched by an Angel 1994
Doug Series ★ 7 Sister, Sister 1994
Rev. Tatum 
