Casey Affleck

Character: Lee Chandler

Lucas Hedges

Character: Patrick Chandler

Michelle Williams

Character: Randi Chandler

Kyle Chandler

Character: Joe Chandler

C.J. Wilson

Character: George

Gretchen Mol

Character: Elise Henderson

Matthew Broderick

Character: Jeffrey Garner

Anna Baryshnikov

Character: Sandy

Heather Burns

Character: Jill

Ivy O'Brien

Character: Young Patrick Chandler

Kara Hayward

Character: Silvie McGann

Tom Kemp

Character: Stan Chandler

Josh Hamilton

Character: Wes (Joe's Lawyer)

Tate Donovan

Character: Hockey Coach

Ruibo Qian

Character: Dr. Bethany

Robert Sella

Character: Dr. Muller

Susan Pourfar

Character: Nurse Irene

Stephen McKinley Henderson

Character: Mr. Emery

Chloe Dixon

Character: Suzy Chandler

Ellie Teves

Character: Karen Chandler

Mary Mallen

Character: Sharon

Richard Donelly

Character: Mr. Martinez (1st Tenant)

Virginia Loring Cooke

Character: Mrs. Groom (2nd Tenant)

Quincy Tyler Bernstine

Character: Marianne (3rd Tenant)

Missy Yager

Character: Mrs. Olsen (4th Tenant)

Ben Hanson

Character: Bartender

Lewis D. Wheeler

Character: 1st Businessman at Bar

Anthony Estrella

Character: 2nd Businessman at Bar

Paul Meredith

Character: Paul (Assistant Principal)

Carolyn Pickman

Character: Paul's Assistant

Christian Mallen

Character: CJ

Oscar Wahlberg

Character: Joel

Wendy Overly

Character: Wes's Assistant

Jackson Damon

Character: Otto

Shawn Fitzgibbon

Character: Tom Doherty (Ping-Pong Player)

Glenn McKiel

Character: Manchester Police Chief

Joe Stapleton

Character: Fire Marshall

Brian Chamberlain

Character: Investigating Detective

Kenneth Lonergan

Character: Manchester Pedestrian

Jami Tennille

Character: Janine

Liam McNeill

Character: Josh (Randi's Husband)

Danae Nason

Character: Rachel (Randi's Friend)

Allyn Burrows

Character: Father Martin

Nellie Lonergan

Character: 1st Girl at School ("Godspell")

Brian A. White

Character: Jerry (Guy in Boat Yard Office)

Erica McDermott

Character: Sue (Angry Boss in Boat Yard Office)

Frank Garvin

Character: Homeowner

William Bornkessel

Character: George's Son (uncredited)

Kt Baldassaro

Character: Bar Patron (uncredited)