Timothée Hal Chalamet was born in New York City to Nicole Flender and Marc Chalamet, a family with strong ties to the arts and international backgrounds.

Growing up in a household that valued creativity, Timothée was constantly encouraged to pursue his interests. His mother, a former Broadway dancer, and his father, an editor for UNICEF, instilled in him a sense of discipline and curiosity about the world.

Timothée attended PS 87 William T. Sherman School for elementary school and later transferred to the selective Delta program at MS 54 Booker T. Washington Middle School, which he described as miserable due to the lack of creative outlets.

He attended the Fiorello H. LaGuardia High School of Music & Art and Performing Arts, where he began to seriously consider acting as a career. Under the guidance of experienced mentors, he honed his skills in drama and theater.