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).

Filmography

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

Appearances as themselves (4)

• Sherri — Self - Guest
• The Jennifer Hudson Show — Self - Guest
• The Kelly Clarkson Show — Self
• Jimmy Kimmel Live! — Self - Guest