Bucky

Alan Arkin

Charlotte Cooper

Diane Keaton

Sam

John Goodman

Hank

Ed Helms

Ruby

Amanda Seyfried

Officer Williams

Anthony Mackie

Joe Bailey

Jake Lacy

Rags (voice)

Steve Martin

Aunt Fishy

June Squibb

Eleanor Cooper

Olivia Wilde

Emma Newport

Marisa Tomei

Angie

Alex Borstein

Charlie Cooper

Timothée Chalamet

Bo Cooper

Maxwell Simkins

Madison Cooper

Blake Baumgartner

Jake

Dan Amboyer

Scott Garan

Dr. Morrissey

Jon Tenney

Mrs. Pinkins

Dorothy Silver

Channing Sebetich

Lauren Hesselberg

Molly Gordon

Mike Pusateri

Bob

Larry McKay

Sara

Sylvia Kauders

Kanani Rose

Lily

Krista Marie Yu

Brady

Keenan Jolliff

Effie Newport

Kristin Slaysman

Young Sam

Michael R. Wilson

Schnozzle Whitehead

Lev Pakman

Young Charlotte

Elisabeth Evans

Young Charlotte (12-14 Yrs)

Quinn McColgan

Young Bucky

Sean McGee

Young Emma

Rory Wilson

Kendra

Michelle Veintimilla

Dog Owner

Joe Fishel

Dog

Richard C. Fishel

Ralph Browning

Young Hank (uncredited)

Issac Smith

Marc Moore Jr.

Santa (uncredited)

Lou Consolo

Cady Huffman

John Luoma

Ryan Borgo

Justin Lonesome

Samuel Mancini

Perfume Lady

Jennifer Jelsema

Handsome Friend

Michael Paradise