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Patrick Thomas O'Brien
ActorBorn January 26, 1951 (73 years)
Patrick Thomas O'Brien is an American actor. He is perhaps best known for playing the role of Mr. Dewey, the math teacher from Saved by the Bell.
Filmography
| 2023 | Rescuing Christmas · as Chuck |
| 2022 | Angry Neighbors · as Jeff Jefferson |
| 2021 | The Last Son · as Bartender |
| 2021 | |
| 2020 | Saved by the Bell (2020) (TV Series) · as Mr. Dewey |
| 2017 | Project Eden · as Stephen Erickson |
| 2016 | Love Always, Santa · as Ferris Wheel Operator |
| 2009 | Nobody · as Dr. Weinstein |
| 2008 | The Curious Case of Benjamin Button · as Dr. Rose |
| 2008 | Uncross the Stars · as Priest |
| 2005 | It's Always Sunny in Philadelphia (TV Series) · as Associate |
| 2004 | Dr. Vegas (TV Series) · as Burns |
| 2004 | Phil of the Future (TV Series) · as Mr. Fleet |
| 2004 | Win a Date with Tad Hamilton! · as Father Newell |
| 2004 | Drake & Josh (TV Series) · as Minister |
| 2003 | Intolerable Cruelty · as Bailiff |
| 2003 | Carnivàle (TV Series) · as Clark |
| 2003 | Dickie Roberts: Former Child Star · as Mr. Gertrude |
| 2003 | |
| 2003 | L.A. Dragnet (TV Series) · as Janitor |
| 2002 | Catch Me If You Can · as Mr. Hendricks |
| 2002 | MDs (TV Series) · as Mr. Lumly |
| 2002 | Push, Nevada (TV Series) · as Cast |
| 2002 | Monk (TV Series) · as Brent Donovan |
| 2001 | Reba (TV Series) |
| 2001 | |
| 2001 | State of Grace (TV Series) · as Cast |
| 2000 | The Brainiacs.com · as Mr. Greenmail |
| 2000 | CSI: Crime Scene Investigation (TV Series) · as Edward Cormier |
| 2000 | Gilmore Girls (TV Series) · as Brian's Dad |
| 2000 | Son of the Beach (TV Series) |
| 2000 | Malcolm in the Middle (TV Series) · as Dad Driver |
| 1999 | Stuart Little · as Uncle Stretch |
| 1999 | Roswell (TV Series) · as Minister |
| 1999 | The West Wing (TV Series) · as Hanson |
| 1999 | Me and Will · as Hick Two |
| 1999 | Providence (TV Series) · as Dr. Smithers |
| 1998 | Pleasantville · as Roy |
| 1998 | Felicity (TV Series) · as Dan Waldron |
| 1998 | Dead Man on Campus · as Priest |
| 1998 | For Your Love (TV Series) · as Mr. Spencer |
| 1997 | Working (TV Series) · as Carl |
| 1997 | Kiss the Girls · as Reporter |
| 1997 | Union Square (TV Series) · as Kenny |
| 1997 | Dharma & Greg (TV Series) · as Roger |
| 1997 | Pensacola: Wings of Gold (TV Series) · as Cast |
| 1997 | Eight Days a Week · as Erica's Father |
| 1996 | Sabrina, The Teenage Witch (TV Series) · as Cupid |
| 1996 | 7th Heaven (TV Series) · as Professor Valentine |
| 1996 | Boston Common (TV Series) · as Ron |
| 1995 | JAG (TV Series) · as Alfred |
| 1995 | Caroline in the City (TV Series) · as Councilman Hardy |
| 1995 | Maybe This Time (TV Series) · as James Howell |
| 1995 | The Naked Truth (TV Series) · as Lab Man |
| 1995 | Girl in the Cadillac · as Ticket Man |
| 1995 | Night Stand (TV Series) · as Neil |
| 1995 | Forget Paris · as Angry Fan |
| 1995 | Sliders (TV Series) · as Jake |
| 1995 | The Brady Bunch Movie · as Auctioneer |
| 1995 | The Wayans Bros. (TV Series) · as Mr. Webster |
| 1995 | Cybill (TV Series) |
| 1994 | ER (TV Series) · as Carmichael |
| 1994 | The Boys are Back (TV Series) · as Teacher |
| 1994 | Wagons East · as Stranger |
| 1994 | Hart to Hart: Home Is Where the Hart Is · as Desk Clerk |
| 1993 | Airborne · as Uncle Louis |
| 1993 | Lois & Clark: The New Adventures of Superman (TV Series) · as Barker |
| 1993 | Saved by the Bell: The New Class (TV Series) · as Mr. Dewey |
| 1993 | The John Larroquette Show (TV Series) · as Mr. Hunter |
| 1993 | Getting By (TV Series) · as Butler |
| 1993 | Babylon 5 (TV Series) · as Cart Owner |
| 1992 | Picket Fences (TV Series) · as John Vermette |
| 1992 | The Larry Sanders Show (TV Series) · as Carl Henckel |
| 1991 | Silk Stalkings (TV Series) · as Mr. Petrie |
| 1991 | Marilyn and Me · as Casting Director |
| 1991 | Step by Step (TV Series) · as Reverend |
| 1991 | Home Improvement (TV Series) · as Ink Ingram |
| 1991 | Switched at Birth · as Dr. Purchio |
| 1991 | Switched at Birth (TV Series) · as Dr. Purchio |
| 1991 | Driven to Kill · as Mobsters |
| 1990 | The Great Los Angeles Earthquake · as Jim Allen |
| 1990 | Camp Cucamonga · as Virgil |
| 1990 | Babes (TV Series) · as Rusty |
| 1990 | Parker Lewis Can't Lose (TV Series) · as Mr. Kubiac |
| 1990 | Equal Justice (TV Series) · as Thornell Katz |
| 1989 | Dragnet (1989) (TV Series) · as Wally Tilson |
| 1989 | Family Matters (TV Series) · as Mr. Denton |
| 1989 | Life Goes On (TV Series) · as Father Mcmichaels |
| 1989 | Saved by the Bell (TV Series) · as Mr. Dewey |
| 1989 | UHF · as Satan |
| 1989 | |
| 1988 | The Wonder Years (TV Series) · as Mr. Santa |
| 1987 | Jake and the Fatman (TV Series) |
| 1987 | Hooperman (TV Series) · as Man In Tie |
| 1987 | Married... with Children (TV Series) · as Wally |
| 1986 | Easy Street (TV Series) · as Don Martin |
| 1984 | 1st & Ten (TV Series) · as Anthony Smalss |
| 1984 | Night Court (TV Series) · as Ernie Carter |
| 1983 | Kenny Rogers as The Gambler: The Adventure Continues · as Jenkins |
| 1983 | Jennifer Slept Here (TV Series) · as Minister |
| 1982 | The Personals · as Jay |
| 1979 | The Facts of Life (TV Series) |