
Jaeden Martell (né Lieberher; born January 4, 2003) is an American actor. He began his career as a child actor, with roles in the comedy drama St. Vincent (2014) and science fiction film Midnight Special (2016). His performance in St. Vincent earned him a nomination for the Critics' Choice Movie Award for Best Young Performer. After playing the title character in the drama The Book of Henry (2017), Martell's breakthrough came with his portrayal of Bill Denbrough in the supernatural horror films It (2017) and It Chapter Two (2019). This led to further leading roles in horror films, such as The Lodge (2019) and Mr. Harrigan's Phone (2022).
Martell had a supporting role in Rian Johnson's mystery comedy Knives Out (2019). Venturing into projects with more mature themes, he played a reserved teenager accused of murder in the Apple TV+ miniseries Defending Jacob (2020). He has since starred in the comedy films Metal Lords (2022) and Y2K (2024).
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It Chapter Two
2019 · as Young Bill Denbrough

Knives Out
2019 · as Jacob Thrombey

Arcadian
2024 · as Joseph

It
2017 · as Bill Denbrough

Y2K
2024 · as Eli

Playing It Cool
2014 · as 6 Year Old Me

Aloha
2015 · as Mitchell Woodside

Our Hero, Balthazar
2026 · as Balthazar

St. Vincent
2014 · as Oliver Bronstein

Midnight Special
2016 · as Alton Meyer

The Lodge
2020 · as Aidan

The Book of Henry
2017 · as Henry Carpenter

The Summers of It – Chapter One: You'll Float Too
2019 · as Self

Metal Lords
2022 · as Kevin Schlieb

Mr. Harrigan's Phone
2022 · as Craig

The Summers of It - Chapter Two: It Ends
2019 · as Self

The Confirmation
2016 · as Anthony

Low Tide
2019 · as Peter