Brad Greenquist (born October 8, 1959) is an American actor.
Greenquist appeared in Pet Sematary, the 1989 film adaptation of Stephen King's 1983 novel of the same name, and in films such as The Diary of Ellen Rimbauer. From the 1990s he was seen as a guest star in various American television series, such as Charmed and ER.
Greenquist was director Steven Soderbergh's preferred choice for the role of Graham Dalton in Sex, Lies, and Videotape, after Kyle MacLachlan and Aidan Quinn turned down the role. However, the producers wanted a more well-known actor, so Soderbergh cast James Spader instead.
Greenquist is also known for his four appearances on various iterations of Star Trek. On Star Trek: Voyager, Greenquist appeared in the Season 3 episode "Warlord." He played the thief Krit in the Star Trek: Deep Space Nine sixth season episode "Who Mourns for Morn?" He also appeared in two separate Star Trek: Enterprise episodes. In the second season episode "Dawn," he played Khata'n Zshaar, and then in the fourth season, he played an unnamed Rigelian kidnapper. Because of these appearances, as well as others in science fiction, fantasy, and horror themed movies and television shows, Greenquist frequently appears on the convention circuit.

Grotesquerie
Psychologist · (1 episode)
2024

Resurrected
Cardinal Degal
2023

Where Are You
Detective
2022

King Richard
Bud Collins
2021

The Tree
Reece Tanner ("Unexplained Phenomena")
2020

The Call of the Wild
Skagway Dog Seller
2020

The Art of Murder
Ben Upchurch
2018

Annabelle: Creation
Victor Palmeri
2017

Unearthed & Untold: The Path to Pet Sematary
Self
2017

A Beginner's Guide to Snuff
Kenneth Kennedy
2016

Reality
Jacques
2015

The Leftovers
Adoption Agent · (1 episode)
2014

The Trials of Cate McCall
Dr. Ennis
2013

The Lone Ranger
Shareholder
2013

California Solo
Piper
2012

Scandal
General Acevedo · (1 episode)
2012

Grimm
Steiger · (1 episode)
2011

Water for Elephants
Mr. Robinson
2011

Across the Hall
The Porter
2009

Eleventh Hour
(1 episode)
2008

The Mentalist
Henry Cliff · (1 episode)
2008

Copperhead
Garrett
2008

Shiloh Falls
Dalton
2007

Moonlight
Gerald Stovsky · (1 episode)
2007

Heroes
Nakamura's Henchman · (1 episode)
2006

Bones
Joseph Serrano · (1 episode)
2005

Smart Card
Ned
2005

Mystery Woman: Snapshot
Robert Benson
2005

Medium
Michael Williams · (1 episode)
2005

CSI: NY
Theodore Gates · (1 episode)
2004

NCIS
Dr. Damon Shore · (1 episode)
2003

Threat Matrix
Radenmacher · (1 episode)
2003

The Diary of Ellen Rimbauer
Doug Posey
2003

Outside the Law
Agent McKenzie
2002

Ali
Marlin Thomas
2001

Alias
Otto Edel · (1 episode)
2001

Star Trek: Enterprise
Rigelian Kidnapper · (1 episode)
2001

Star Trek: Enterprise
Captain Khata'n Zshaar · (1 episode)
2001

Six Feet Under
Building Manager · (1 episode)
2001

That's My Bush!
Austrian Soldier #2 · (1 episode)
2001

Lost Souls
George Viznik
2000

CSI: Crime Scene Investigation
Taxi Manager · (1 episode)
2000

Crime + Punishment in Suburbia
Calvin Berry
2000

Inherit the Wind
Tom Davenport
1999
The Puzzle in the Air
Jeff Swerdling
1999

Charmed
Gavin · (1 episode)
1998

V.I.P.
Heinrich Anser · (1 episode)
1998

The Ransom of Red Chief
Strange Pierre
1998

Dead by Midnight
Hendricks
1997

Gang Related
Richard Stein
1997

Stargate SG-1
Dr. Keffler · (1 episode)
1997

The Practice
FBI Profiler · (1 episode)
1997

In Cold Blood
(2 episodes)
1996

The Pretender
Frank Linden · (1 episode)
1996

Crime of the Century
Isidor Fisch
1996

Blackout
Opponent
1996

In the Shadow of Evil
Willy Sommers
1995

Star Trek: Voyager
Demmas · (1 episode)
1995

The Beast Within: A Gabriel Knight Mystery
Georg Immerding
1995

ER
Mr. Butler · (2 episodes)
1994

The Yearling
Lem Forrester
1994

Assault at West Point: The Court-Martial of Johnson Whittaker
Dr. Beard
1994

Diagnosis: Murder
Natwa · (1 episode)
1993

Walker, Texas Ranger
Lomax · (1 episode)
1993

Star Trek: Deep Space Nine
Krit · (1 episode)
1993

Golden Years
Steve Dent
1991

Golden Years
Steve Dent · (1 episode)
1991

Law & Order
Bartender · (1 episode)
1990

Loose Cannons
Embassy Officer
1990

Pet Sematary
Victor Pascow
1989

The Chair
Mushmouth
1988

Alone in the Neon Jungle
Vince Genilli
1988

The Bedroom Window
Henderson
1987

Mutants in Paradise
Steve Awesome
1984