Mark St. Cyr
Acting · 38 years old
Mark St. Cyr is an American actor native of Louisiana.
Known For
Chicago P.D.
Arthur Burton
Person of Interest
Airport Cop
High School Musical: The Musical: The Series
Benjamin Mazzara
Law & Order: Special Victims Unit
Jamal Turner
High School Musical: The Musical: The Holiday Special
Self
The Menu
Dave
Elsbeth
Ronan Gaines
Going in Style
DJ (uncredited)
The Housesitters
Eric
Triple Threat
Caleb
Root Letter
Adam
A Spicy but Not Too Spicy Plumber