Ashby was born in Atlantic Beach, Florida, the son of Eleanor (Johnson), a civic organizer, and Clarence Linden Garnett Ashby, a pharmaceuticals manufacturer. Ashby graduated from The Bolles School, a private school located in Jacksonville, Florida. He attended Fort Lewis College in Durango, Colorado, but dropped out his junior year to pursue an acting career. Ashby studied acting at Neighborhood Playhouse in New York. One of his first roles was as Lance Reventlow, the only son of Woolworth heiress Barbara Hutton (played by Farrah Fawcett) in the Golden Globe-winning miniseries Poor Little Rich Girl: The Barbara Hutton Story. He was on Melrose Place as Dr. Brett Cooper for one season in 1998. He first appeared on Melrose Place in the first season in 1993 as Jo's husband Charles Reynolds, in the episodes "Peanut Butter and Jealousy" and "Single White Sister". He played Cameron Kirsten on The Young and the Restless from 2003 to 2004. He also began playing the role of Paul Hollingsworth on Days of Our Lives in March 2008.
- Two daughters with wife actress Susan Walters: Grace Ashby (born June 1991) and Savannah (born November 1992).
- Attended Fort Lewis College (a branch of the Colorado State University) in Durango. He majored in business and psychology before dropping out Junior year to become an actor.
- Graduated from Bolles High School, a private school located in Florida.
- He's been surfing since he was 9. He actually grew up right on a beach in Northeast Florida. He even surfed competitively back in high school
- he was invited to the East Coast Championships three times.
- Some of his hobbies include golf, tennis, windsurfing, scuba diving, horseback riding and hunting.
- Has his own 6-seat plane "Piper Lance", currently housed at Van Nuys Airport.
- Replaced Brandon Lee in the role of Johnny Cage in Mortal Kombat (1995) due to Brandon's sudden death in 1993.
- Linden has been a student of martial arts on and off since he was 21 with a lot of time off. *He's mostly studied Karate, with some Tae Kwon Do, and some Chinese styles thrown into the mix.
- Studied acting with Sanford Meisner at The Neighborhood Playhouse in New York for two years.
|Mr. and Mrs. Bridge||Uncredited Role|
|1992||Into the Sun||Dragon|
|Inside Out III||Jerry Van Anthony||Segment: Tang Martin Hudson|
|1994||Wyatt Earp||Morgan Earp|
|1994||8 Seconds||Martin Hudson|
|1995||Mortal Kombat||Johnny Cage|
|1999||Time of Her Time||Sergius O'Shaughnessy|
|Judgment Day||Dr. David Corbett||Direct-to-Video Release|
|2000||Dangerous Attraction||Neil/Dan Paterson|
|Tick Tock||Travis Brewer|
|2001||Facing the Enemy||Griff McCleary|
|2002||Fits and Starts|
|2003||The Company You Keep||Harry|
|A Woman Hunted||Det. Webster|
|2004||Wild Things 2||Det. Michael Morrison||Direct-to-Video Release|
|2005||Wild Things: Diamonds in the Rough||Det. Michael Morrison||Direct-to-Video Release|
|Sub Zero||Soloman Davis|
|2007||Plot 7||Richard McCarthy|
|Resident Evil: Extinction||Chase|
|2008||Prom Night||Uncle Jack Turner|
|Impact Point||Det. Adams|
|2009||Against the Dark||Cross||Direct-to-Video Release|
|National Lampoon's Van Wilder: Freshman Year||Van Wilder (Senior)||Direct-to-Video Release|
|2013||Iron Man 3||Commander|
|1983||Loving||Curtis Alden #4|
|1987||1st & Ten||Episode: Blood on Blood|
|Werewolf||Victim #2 in VW||Episode: Werewolf|
|Poor Little Rich Girl: The Barbara Hutton Story||Lance Reventlow (adult)||TV-Movie|
|1989||China Beach||Phillip||Episode: The World (2)|
|1989–1991||Adam-12||Officer Honeycutt||9 episodes|
|1990||Hardball||Episode: A Killer Date|
|MacGyver||Brett Reynolds||Episode: Twenty Questions|
|1991||Equal Justice||Charles||Episode: Sleeping with the Enemy|
|The Perfect Bride||Ted||TV-Movie|
|1992||Fifteenth Phase of the Moon||Jason||TV-Movie|
|1993||New Year||Jimi Hartman||TV-Movie|
|1993–1998||Melrose Place||Dr. Brett 'Coop' Cooper||35 episodes|
|1994||Green Dolphin Beat||Dave Henderson||TV-Movie|
|1996||Dark Angel||Harry Foley||TV-Movie|
|1997||The Beneficiary||Jimmy Price||TV-Movie|
|Spy Game||Lorne Cash||13 episodes|
|1998||The Lake||Dr. Jeff Chapman||TV-Movie|
|The Love Boat: The Next Wave||Lt. Joe Spenser||Episode: Bermuda Triangle Episode|
|Murder She Purred: A Mrs. Murphy Mystery||Dr. Blair Bainbridge||TV-Movie|
|1999||Where the Truth Lies||Carter Tamiran||TV-Movie|
|2000||The War Next Door||Kennedy Smith||13 episodes|
|2001||The Agency||Episode: A Slight Case of Anthrax|
|2002||CSI: Crime Scene Investigation||Det. Drew Wolf||Episode: A Little Murder|
|Sniper 2||Col. David McKenna||TV-Movie|
|2003–2004||The Young and the Restless||Cameron Kirsten||55 episodes|
|2005||A Killer Upstairs||Lyle Banner||TV-Movie|
|CSI: Miami||Steven Hardy||Episode: Three-Way|
|2005, 2007||Eyes||Michael Tobin|| Episode: Shots|
|2006||Maid of Honor||Richard Wynn||TV-Movie|
|Last Exit||Scott Burke||TV-Movie|
|The Rival||George Miller||TV-Movie|
|2007||My Neighbor's Keeper||Mike Harding||TV-Movie|
|2008||Dead at 17||Curt Masterson||TV-Movie|
|Days of Our Lives||Paul Hollingsworth||23 episodes|
|2009||Anacondas: Trail of Blood||Jackson||TV-Movie|
|Drop Dead Diva||Parker Wellner|
|2010||The Gates||Ben McAllister||Recurring Role|
|2011||Mean Girls 2||Rod Mitchell||TV-Movie|
|2011–present||Teen Wolf||Sheriff Stilinski||Recurring role|
|2011||Franklin & Bash||Evan Porter||1 episode: "Pilot"|
|2011||Field of Vision||Ron Dixon||TV Movie|
|2012||Gabe the Cupid Dog||Jerry||TV Movie|