Leonardo DiCaprio as Frank Wheeler

Kate Winslet as April Wheeler

Kathy Bates as Mrs. Helen Givings

Michael Shannon as John Givings

Kathryn Hahn as Milly Campbell

David Harbour as Shep Campbell

Dylan Baker as Jack Ordway

Richard Easton as Mr. Givings

Zoe Kazan as Maureen Grube

Jay O. Sanders as Bart Pollock

Max Baker as Vince Lathrop

Max Casella as Ed Small

Christopher Fitzgerald as Party Guest

Jonathan Roumie as Party Guest

Neal Bledsoe as Party Guest

Marin Ireland as Party Guest

Samantha Soule as Party Guest

Heidi Armbruster as Party Guest

Sam Rosen as Party Guest

Maria Rusolo as Party Dancer

Gena Oppenheim as Party Dancer

Kathryn Dunn as Party Dancer

Joe Komara as Party Dancer

Allison Twyford as Party Dancer

John Ottavino as Other Actor in the Play

Adam Mucci as Other Actor in the Play

Jo Twiss as Other Actor in the Play

Frank Girardeau as Other Actor in the Play

Catherine Curtin as Woman in Audience

Dan Da Silva as Knox Elevator Operator

Keith Reddin as Ted Bandy

Ryan Simpkins as Ed Small

Ty Simpkins as Vince Lathrop

Jon Sampson as American Express Clerk

Peter Barton as Campbell Kid

Kevin Barton as Campbell Kid

Evan Covey as Campbell Kid

Dylan Clark Marshall as Campbell Kid

Chandler Vinton as Knox Receptionist

Bethann Schebece as Vito's Log Cabin Dancer

Kelsey Bair as Vito's Log Cabin Dancer

Jason Etter as Vito's Log Cabin Dancer

Adair Moran as Vito's Log Cabin Dancer

Tommaso Antico as Vito's Log Cabin Dancer

Justin Misenhelder as Vito's Log Cabin Dancer

Will Vought as Vito's Log Cabin Dancer

Emaline Green as Vito's Log Cabin Dancer

Isabella Zubor as Vito's Log Cabin Dancer

Kal Thompson as Vito's Log Cabin Dancer

Racheline Maltese as Vito's Log Cabin Dancer

Lauren Hubbell as Vito's Log Cabin Dancer

Duffy Jackson as Steve Kovac

Dan Zanes as The Steve Kovac Band

Vince Giordano as The Steve Kovac Band

Jon-Erik Kellso as The Steve Kovac Band

Andy Burton as The Steve Kovac Band

Will Reardon-Anderson as The Steve Kovac Band

Alex Hoffman as The Steve Kovac Band

Kristen Connolly as Mr. Brace

John Behlmann as Mr. Brace