★ 8.4 
Acting
John Tierney
John Tierney is best known for The X-Files, Siren, Stargate SG-1 and Stargate Atlantis.
Known for
Filmography
- 2018SirenJohn
- 2017LoudermilkGlen
- 2016TravelersTerminal Patient #4
- 2008The Guard
- 2007ReaperButler
- 2006PsychArt
- 2004Century CityMinister
- 2004Stargate AtlantisAlstrum
- 1998First WaveBurgess
- 1997Stargate SG-1Monk
- 1996MillenniumPreacher
- 1995Caroline in the CityKey Grip
- 1994ViperSecurity Guard
- 1993The X-FilesDr. Jacobs
- 1992Highlander: The SeriesOld Father Morton
- 1992The Hat SquadJudge
- 1991The Commish
- 1987Wiseguy
Frequently asked questions
What movies and shows has John Tierney been in?
John Tierney is best known for The X-Files, Siren, Stargate SG-1 and Stargate Atlantis.
Updated: October 27, 2026 ·