Actor who received an Academy Award nomination for his first leading role in the 2017 film Call Me by Your Name. He portrayed Finn Walden in the Showtime series Homeland and is also recognized for his recurring role as Luke in Royal Pains. Other notable film credits include Interstellar, Lady Bird, Hostiles and Beautiful Boy.
He made his childhood acting debut in the 2008 short film Sweet Tooth and went on to study at New York City's Fiorello H. LaGuardia High School.
In 2015, he appeared in four films: One and Two, The Adderall Diaries; Miss Stevens; and Love the Coopers.
He grew up in the Hell's Kitchen neighborhood of Manhattan, New York alongside his sister Pauline. He is the son of Marc Chalamet and Nicole Flender. His grandfather is screenwriter Harold Flender, and his uncle is director Rodman Flender.
He stars alongside Armie Hammer in 2017's Call Me by Your Name.