Mark St. Cyr is an American actor native of Louisiana.
Law & Order: Special Victims Unit
Series • 1999
Person of Interest
Series • 2011
Chicago P.D.
Series • 2014
Elsbeth
Series • 2024
High School Musical: The Musical: The Series
Series • 2019
The Menu
Movie • 2022
Going in Style
Movie • 2017
High School Musical: The Musical: The Holiday Special
Movie • 2020
Root Letter
Triple Threat
