Cast & creator
William Stanford Davis
Best known for CSI: Crime Scene Investigation, The Kelly Clarkson Show, Bones
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).
Also known as: Stan Davis, William Standford Davis
35
film credits
42
television credits
77
1994–2026 · acting roles
6.8
average across scored titles
Signature credits
Known for
Across film & television
Filmography (77)
Showing 77 of 77 credits
CSI: Crime Scene Investigation
Mechanic
2000
The Kelly Clarkson Show
Self
2019
Bones
Floyd Barber
2005
Shameless
Conrad
2011
Desperate Housewives
William
2004
Jimmy Kimmel Live!
Self - Guest
2003
The Jennifer Hudson Show
Self - Guest
2022
Chicago Med
Ed Brennan
2015
Sherri
Self - Guest
2022
It's Always Sunny in Philadelphia
Mr. Johnson
2005
Curb Your Enthusiasm
Chulu Porter
2000
The Closer
Homeless Man
2005
The Middle
Projectionist
2009
The Practice
Clarence Barnett
1997
Cold Case
Deante
2003
Touched by an Angel
Doug
1994
Strong Medicine
Doug - Aneesha's Boss
2000
Angel
Security Guard
1999
The Shield
Deon
2002
My Name Is Earl
Neighbor
2005
Abbott Elementary
Mr. Johnson
2021
The Big Bang Theory
Dry Cleaner
2007
The Guardian
Brian
2001
Ray Donovan
Potato Pie
2013
Snowpiercer
Mr. Riggs
2020
Sister, Sister
Rev. Tatum
1994
The District
Mr. Gillis
2000
American Dreams
Joe
2002
Terminator: The Sarah Connor Chronicles
Pastor Jonas
2008
Perry Mason
Daniel Madison
2020
Ally McBeal
Jim
1997
Saving Grace
Group member at party
2007
Shark
Sonny Gore
2006
Harry's Law
Kareem Anderson
2011
Truth Be Told
Agathia
2019
Studio 60 on the Sunset Strip
Floor Manager
2006
The Finder
Earl
2012
LAX
Engineer Dietrich
2004
Diary of a Wimpy Kid: The Last Straw
Troopmaster Barrett (voice)
2025
Swagger
Coach Max
2021
Light as a Feather
Old Man
2018
City of Angels
Construction Foreman
1998
Side Quest
Earl
2025
Please Stand By
Creed (uncredited)
2018
Primary Colors
Jack Mandela Washington
1998
A Lot Like Love
Priest
2005
Sons & Daughters
Cook
2006
Adopt a Highway
Hatty
2019
Across the Hall
Custodian
2009
The Prophecy 3: The Ascent
Portly Coroner
2000
James Dean
Train Conductor
2001
Cardboard Boxer
Jazzy
2016
Handsome: A Netflix Mystery Movie
Lester
2017
Guns for Hire
Liquor Store Clerk
2015
Barry Munday
Greens Keeper
2010
Undercard
Baba T
2026
Running Time
Buzz
1997
So B. It
Man at Cab Co.
2016
When Duty Calls
Clyde Pierce
2015
Hallowed Ground
Truck Driver
2007
Love, Gloria
Kenny
2012
Self Medicated
Gabe
2005Damn Whitey
George
You Can Never Really Know Someone
Man 2 (Bible Study Member)
2016
A Winter Rose
Stage Manager
2016
Urban Evil: Trilogy of Fear
2005
Dead Women Walking
Warden
2018
Accused at 17
Detective Gilson
2009
Ragdoll
Big Pere
1999
Clean
Foster
2004
A Holiday Chance
Bernie
2021
Holly Day
Thaddeus
2018The Red Boot Diaries
Leon
2001Bulldog
Leon
2002
The Spirit Hunter
Gabe
2004Subway Cafe
Jerome Mayfield
2004
L.A. Superheroes
Hal
2013