Cast & creator
Matthew Shear
Best known for The Alienist, Love Life, Marriage Story
Matthew Louis Shear is an American actor known for his work in independent film and frequent collaborations with director Noah Baumbach. He began his career with a small role in Taking Woodstock (2009) and appeared in Mistress America (2015), The Meyerowitz Stories (New and Selected) (2017), and Marriage Story (2019), and played Lucius Isaacson on The Alienist (2018–2020). In 2025, he made his directorial debut with Fantasy Life, which he also wrote and starred in.
Also known as: Matthew Louis Shear
17
film credits
3
television credits
17
2009–2026 · acting roles
6.2
average across scored titles
Signature credits
Known for
Across film & television
Filmography (20)
Showing 20 of 20 credits
The Alienist
Lucius Isaacson
2018
Love Life
Ben
2020
Marriage Story
Terry - Theater Actor
2019
Old
Sidney
2021
Horace and Pete
Zach
2016
While We're Young
Benny
2015
Taking Woodstock
Earthlight Player
2009
The Meyerowitz Stories (New and Selected)
Gabe
2017
Mistress America
Tony
2015
Between the Temples
Nat
2024
Fantasy Life
Sam
2026Fantasy Life
Director
2026Fantasy Life
Screenplay
2026Fantasy Life
Executive Producer
2026
Don Peyote
Zebra Shaman
2014Elijah
Louis
The Boy Downstairs
Ben
2018
Cubby
Lars
2019
The Statistical Analysis of Your Failing Relationship
2015
Treasure Trouble
Jake
2019