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Backdrop from a project of Mark St. Cyr
Poster for Mark St. Cyr

Mark St. Cyr

1987 (38) • Acting

Mark St. Cyr is an American actor native of Louisiana.

Known For

Law & Order: Special Victims Unit

80%

Jamal Turner

1999

Chicago P.D.

84%

Arthur Burton

2014

Person of Interest

81%

Airport Cop

2011

High School Musical: The Musical: The Series

80%

Benjamin Mazzara

2019

Elsbeth

67%

Ronan Gaines

2024

Root Letter

52%

Adam

2022

The Housesitters

58%

Eric

2019

Triple Threat

60%

Caleb

2020

A Spicy but Not Too Spicy Plumber

20%
2025

Elsbeth

67%

Ronan Gaines

2024

The Menu

72%

Dave

2022

Root Letter

52%

Adam

2022
John Doe

John Doe

70%

Mark

2021

High School Musical: The Musical: The Holiday Special

74%

Self

2020

Triple Threat

60%

Caleb

2020

High School Musical: The Musical: The Series

80%

Benjamin Mazzara

2019

The Housesitters

58%

Eric

2019

Going in Style

67%

DJ (uncredited)

2017

Chicago P.D.

84%

Arthur Burton

2014

Person of Interest

81%

Airport Cop

2011

Law & Order: Special Victims Unit

80%

Jamal Turner

1999
Snare

Snare

Tender

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