
Robert Clark Gregg Jr. (born April 2, 1962) is an American actor, director, and screenwriter. He is best known for portraying Phil Coulson in films and television series set in the Marvel Cinematic Universe from 2008 to 2021. Gregg also voiced Coulson in the animated television series Ultimate Spider-Man (2012–2017) and the video games Lego Marvel Super Heroes (2013), Marvel Heroes (2013), and Lego Marvel's Avengers (2016).
Gregg is also known for his role as FBI Special Agent Mike Casper on the NBC political drama series The West Wing (2001–2004) and as Richard, the ex-husband of Christine Campbell, in the CBS sitcom The New Adventures of Old Christine (2006–2010).
He wrote the horror film What Lies Beneath (2000) and wrote and directed the black comedy Choke (2008) and the comedy-drama Trust Me (2013). He appeared in the films The Adventures of Sebastian Cole (1998), One Hour Photo (2002), We Were Soldiers (2002), In Good Company (2004), When a Stranger Calls (2006), 500 Days of Summer (2009), Much Ado About Nothing (2012), The To Do List (2013), Labour Day (2013), Live by Night (2016), and Being the Ricardos (2021).
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War of the Worlds
2025 · as NSA Director Donald Briggs

The Avengers
2012 · as Agent Phil Coulson

Iron Man 2
2010 · as Agent Coulson

Iron Man
2008 · as Agent Coulson

The Usual Suspects
1995 · as Dr. Walters

Thor
2011 · as Agent Coulson

Captain Marvel
2019 · as Agent Coulson

(500) Days of Summer
2009 · as Vance

Clear and Present Danger
1994 · as Staff Sergeant

A.I. Artificial Intelligence
2001 · as Supernerd

We Were Soldiers
2002 · as Capt. Tom Metsker

Magnolia
1999 · as WDKK Floor Director

One Hour Photo
2002 · as Paul Outerbridge

The To Do List
2013 · as Judge Klark

G20
2025 · as Vice President Harold Moseley

Live by Night
2016 · as Calvin Bondurant

Labor Day
2013 · as Gerald

In Enemy Hands
2004 · as Teddy Goodman