Paul grew up in White Rock, British Columbia, and graduated from Semiahmoo Secondary in 1997.
From 2004 to 2006 he portrayed Billy Keikeya on the reimagined Battlestar Galactica. Campbell's character was a personal assistant to President Laura Roslin.
Campbell made his first foray into comedy in 2005, starring in the Bill Lawrence TV pilot Nobody's Watching, for The WB. The pilot was not picked up to series but gained later notoriety when it was posted to YouTube. He starred in National Lampoon's Bag Boy with Dennis Farina in 2007.
In 2008, Campbell appeared in the romantic comedy Play the Game alongside Andy Griffith, Doris Roberts, Liz Sheridan, and Marla Sokoloff. Campbell played a young ladies' man who teaches his lonely, widowed grandfather how to re-enter the dating world after a 60-year hiatus.
Also in 2008, Campbell, playing "Billy" for the second time co-starred on NBC's Knight Rider reboot.
In March 2009, Campbell was cast in an ABC comedy pilot based on the British series No Heroics, which revolves around four B-list superheroes. He played the leader of the group, Pete, aka Chillout, a Canadian-born superhero who can freeze small objects. The pilot was not picked up by ABC.
In 2010, Campbell starred in the comedy series Almost Heroes alongside series co-creator Ryan Belleville and actors Colin Mochrie, Lauren Ash and Athena Karkanis. The series debuted on Showcase in June 2011, with the finale of the eight-episode first season airing July 21.
Campbell led the cast of the CTV comedy series Spun Out, alongside Dave Foley, Rebecca Dalton, Al Mukadam, Holly Deveaux, J. P. Manoux and Darcy Michael.

Three Wiser Men And A Boy
Stephan Brenner
2024

The Santa Class
Paul Campbell
2024

Falling Together
Mark Wallace
2024

The Cases of Mystery Lane: Death is Listening
Alden Case
2024

Magic in Mistletoe
Harrington
2023

The Cases of Mystery Lane
Alden Case
2023

Three Wise Men and a Baby
Stephan Brenner
2022

Dating the Delaneys
Michael Taylor
2022

Love, Classified
Bartende (uncredited)
2022

The Nine Kittens of Christmas
Mason
2021

The Santa Stakeout
Ryan
2021

Turner & Hooch
Grady Garland · (6 episodes)
2021

Christmas by Starlight
William Holt
2020

Wedding Every Weekend
Nate
2020

Holiday Hearts
Ben Tyler
2019

The Last Bridesmaid
Kyle Taylor
2019

A Godwink Christmas
Gery Conover
2018

The Girl in the Bathtub
Paul
2018

Sun, Sand & Romance
Shep
2017

Once Upon A Holiday
Jack
2015

Man Seeking Woman
Guy at Head of Table · (1 episode)
2015

Surprised by Love
Maxwell Gridley
2015
Dirty Singles
Jack
2014

Rusty Steel
Mike
2014

Preggoland
Danny
2014

Spun Out
Ryan Beckett · (4 episodes)
2014

Window Wonderland
Jake Dooley
2013

Motive
Peter Ward · (1 episode)
2013

Emily Owens, M.D.
Scott · (2 episodes)
2012

The Big Year
Tony
2011

Killer Mountain
Tyler
2011

Almost Heroes
Terry · (8 episodes)
2011

Bond of Silence
Officer Haines
2010

Play the Game
David Mitchell
2009

Knight Rider
Billy Morgan · (17 episodes)
2008

Bagboy
Phil
2007

88 Minutes
Albert Jackson
2007
Nobody's Watching
Will
2006

Severed
Tyler
2005

Supernatural
Don Richardson · (1 episode)
2005

The Long Weekend
Roger
2005

Battlestar Galactica
Billy Keikeya · (23 episodes)
2004

Ill Fated
Jimmy
2004

The Perfect Score
Guy in Truck (uncredited)
2004

Battlestar Galactica
Billy · (2 episodes)
2003

Black Sash
(1 episode)
2003

The Dead Zone
Chuck Chatsworth · (1 episode)
2002

Andromeda
Crewman Bowlus · (1 episode)
2000

Andromeda
Lt. Bowlus · (2 episodes)
2000
Nobody's Watching
Will · (1 episode)