I Know This Much Is True (2020) | Full Cast

Derek Cianfrance

DIRECTOR

Mark Ruffalo

Dominick Birdsey

John Procaccino

Ray Birdsey

Rob Huebel

Leo

Gabe Fazio

Shawn Tudesco

Kathryn Hahn

Dessa Constantine

Melissa Leo

Ma

Rosie O'Donnell

Lisa Sheffer

Archie Panjabi

Dr. Patel

Michael Greyeyes

Ralph Drinkwater

Donnie Masihi

Dominick Birdsey - 8 yo

Rocco Masihi

8-Year-Old Thomas Birdsey

Imogen Poots

Joy Hanks

Laura Esterman

Ruth Rood

Marcello Fonte

Domenico Tempesta

Philip Ettinger

17-19-Year-Old Dominick Birdsey

Bruce Greenwood

Dr. Hume

Juliette Lewis

Nedra Frank

Aisling Franciosi

Young Dessa

Annie Fitzgerald

Miss Hanker

Irene Muscara

Prosperina

Matt Helm

Young Leo

Agatha Nowicki

Angie Constantine

Joseph Ragno

Henrey Rood

Tatanka Means

Nabby Drinkwater

Derek Goh

17-19-Year Old Dominick & Thomas Acting Double

Acahkos Johnson

Penny Ann Drinkwater

Jaiden Klein

Marie Sexton

Pete Forth

Other Guard

Violet Adams

Bunny

Oliver Patnode

Otero

Adrienne r Williams

Mrs. Birdsall

Crystal the Monkey

Monkey

Squirt

Monkey

Harris Yulin

Father Lavie

Guillermo Diaz

Sergeant Mercado

Marylouise Burke

Librarian

A.C. Peterson

Gene Diogenes

Brian Goodman

Al

Simone Coppo

Vincenzo Tempesta

Roberta Rigano

Ignazia Tempesta

Felix Solis

Nurse

Sean Cullen

Dr. Yates

Michael Armand DeMatteo

Fatso

Federico Dordei

Nunzio

Shannon Plumb

ACTOR

Joe Grifasi

Steve Falice

James Pravasilis

Third Guard

Sue Jean Kim

Dr. Yup

Tim Ruddy

Robocop

Sandra Berrios

Social Worker at Hatch

Michael Simon Hall

Stuart Feinstein

Jorge Caraballo

Jerry Martineau

Laura Silverman

Kristin

Bethany Kay

Miss Haas

Vincent Reina

Channy

Tonya Canady

Vonette

Kayleen Rovere

Funeral Director

Omar Pederzoli

Rocco Iacco

Kate Grimes

English Professor

Raymond Neil Hernandez

Omar

Christine Parks

Humanities Department Chair

Zaria Degenhardt

11 Year Old Concettina

Mariano La Manno

Pedacci

Michael Mellamphy

Sgt. O'Meara

Morgan Sullivan

Office Buddy

Ksistsiikoma Low Horn-Wadsworth

Young Henry Drinkwater

Gina Costigan

Mrs. O'Meara

Bodhi Okuma Linton

7-8-Year-Old Ralph Drinkwater

Chris Swain

Hospital Aide

Samuel R. Katz

Eugene Savitsky

John Gardner

Desk Officer

Destry Allyn Spielberg

Dr. Hume's Daughter

Jake Robards

Landlubbers

James Feeney

Dr. Azzi

Lorenzo Cusa

Marshall

Christopher J. Hanke

Thad

Michael Genet

Thomas' Surgeon

Steven Cox

Boyfriend of Dr. Hume's Daughter

Charlie Reina

Channy

Mark A. Gamma

Mourner Mark

Morningstar Angeline

Nabby Drinkwater's Wife

James Quattrochi

Bus Driver

Wayne J. Miller

Mourner Wayne

Apurv Agrawal

Ma's Surgeon

Al Linea

Abruzzi

Maria Gonzalez

Ma's Oncology Nurse

Kevin Walsh

Mourner Mike

Gianna Sarlo

Girl in Yellow

Scott Thomas

Dale

Michelle Majors

Ray's Physical Therapist

Sarah Marcum Reyes

Ma's Hospice Nurse

Miles Katz

Eugene Savitsky

Richard Fitch

Mill Foreman

Rachel B. Joyce

Jeanette

Emiliano Iagher

Mill Worker

Thomas Gionet-Lavigne

Ray's Orderly

Alice Rothman-Hicks

Hospice Worker

Chelsea Sheets

Brunette

Itzel Magnolia Castellanos

Exam Room Handler

Stephanie McCann

Nurse's Aide

Vito J. Petroccitto Jr.

Rivercrest Musician

Charles Jeeter

Hatch Hospital Guard

Brigitte Williamson

Brunette with Bangs

Marion Parks

Rivercrest Woman

Paul Coleman

Support Group Counselor

Brandon J. Dirden

Kyle's Dad

Ethan Crystal

Thin Sailor

James Diluzio

1920s Priest

Kim Secord

Ray's ICU Doctor

Brett Bartholomew

No Neck Sailor

Amy Lynn Stewart

Merciful Mother

Katt Masterson

Doreen

Sarah Oustatcher

Ray's ICU Nurse

Jason Furlani

Larry Penn

Royce Seader

Ray's Rehab Nurse

Gary James Windt

Color Guard

Alexander Hacker

Templeton

Alexander Vinogradov

Angela's Funeral Priest

Kelvin Hernandez

Flag Presenter

Robert Mladinich

Paddy Wagon Officer

Necole Milone

Well Wisher

Peter Weiss

'John Wayne'

James Vertucci

Paddy Wagon Driver

Thomas Catizone

Insane Asylum Physician

Mitchell Kolvenbach

Insane Asylum Attendant

Patrick Klein

Mourneruncredited

Peter Gallino

College Studentuncredited

Mike Holt

Hatch inmateuncredited

Sebastian Deerkop

Man on Boatuncredited

Harry Yudenfriend

Foreman #1uncredited

Monica Ayres

Funeral Mourneruncredited

Albert Skowronski

ER Patientuncredited

Christopher Moser

Street Pedestrianuncredited

Nacia Walsh

Nurseuncredited

Alexandra Clear

Shoe Store Backgrounduncredited

Zoe Hutmacher

Italian Immigrantuncredited

Brendan Boyce

Hospital Patientuncredited

Shawn Welch

Card Playeruncredited

Amelia Pozniak

Studentuncredited

Stephanie Marrinan

1920s Shopperuncredited

Joy Decker

Airline Passengeruncredited

Carrie Cates

Mill Workeruncredited

Murphy-Kate Longendyke

Italian Immigrantuncredited

Jessica Kennedy

Funeral Mourneruncredited

Bill Ricciardelli

Construction Workeruncredited