
D. Neil Mark
Acting
Biography
D. Neil Mark is a Canadian actor who has appeared in numerous film and television productions. He starred in The 6th Day (2000), Fear (1996), and Fly Away Home (1996). In addition to his film roles, he has appeared in various series, including The X-Files (1993–2018), Stargate SG-1 (1997–2007), and Smallville (2001–2011).
Filmography
27 credits
Born to Raise Hell
Movie • 2010
Steve

The Substitute
Movie • 1993
Rusty

Y2K
Movie • 1999
Quantum Co-Pilot

Dead Ahead
Movie • 1996
Eric Payeton

They Nest
Movie • 2000
Harbor Patrolman

Deadlocked: Escape from Zone 14
Movie • 1995
Cop #1

Storm Chasers: Revenge of the Twister
Movie • 1998
1st Crew Member

The Santa Clause 2
Movie • 2002
Teacher

Contagious
Movie • 1997
Lab Technician

The 6th Day
Movie • 2000
Security Guard

Charlie St. Cloud
Movie • 2010
EMT

Night Visitors
Movie • 1996
MP #2

Turbulence 2: Fear of Flying
Movie • 1999
Naval Officer

The Italians Are Coming
Movie • 2025
Bill

Smallville
TV • 2001
McNulty

Stargate SG-1
TV • 1997
Frakes

The Lone Gunmen
TV • 2001

Rockpoint P.D.
TV • 2003

The X-Files
TV • 1993
S.W.A.T. Team Officer

Dark Angel
TV • 2000
Checkpoint Cop 2

The Outer Limits
TV • 1995
Guard

The X-Files
TV • 1993
Deputy Scott Kerber

Andromeda
TV • 2000
Alexandros

Sliders
TV • 1995
Stationary Biker

Fringe
TV • 2008
ND Agent

21 Jump Street
TV • 1987
Scott Arbogast

John Doe
TV • 2002
Uniformed Officer