Peter MacKenzie (born January 19, 1961) is an American actor. In 1979, Peter took acting lessons in New York. He worked at a talent agency before deciding to work as an actor full time in 1984. His first major role was on Herman's Head. He is a character actor. He also played "Mr. Firestein" in the season 3 episode of The Drew Carey Show titled "The Sex Drug", as Mimi Bobeck's counsel in her sex harassment case against Nigel Wick, and co-starred in the 1987 film Firehouse. One of his minor roles was Mr. Sneed in Disney's Tom and Huck. He plays anti-war activist David Dellinger in the 2012 film The Chicago 8.

| Title | ||||||
|---|---|---|---|---|---|---|
Room 6 | Dr. Kent | 5 | 2006-11-24 | 3.3623 | ||
It's Complicated | Dr. Allen | 6.512 | 2009-12-23 | 7.1554 | ||
American Tragedy | Bill Blasier | 5.8 | 2000-11-12 | 1.0951 | ||
Good Morning, Vietnam | Sergeant #2 at Jimmy Wah's | 7.299 | 1987-12-23 | 5.6557 | ||
The In Crowd | Bob Mead | 4.7 | 2000-07-19 | 2.6642 | ||
Project X | Dad | 6.926 | 2012-03-01 | 12.1809 | ||
Fool's Paradise | Psych Doc 1 | 4.657 | 2023-05-12 | 2.7778 | ||
The Chicago 8 | David Dellinger | 5.6 | 2011-06-04 | 1.1533 | ||
Theodore Rex | Alex Summers | 3.632 | 1995-12-14 | 2.648 | ||
Earth to Echo | James Hastings | 5.9 | 2014-06-14 | 2.7186 |