Irrational Man

Joaquin Phoenix

Abe

Emma Stone

Jill

Jamie Blackley

Roy

Parker Posey

Rita

Joe Stapleton

Professor

Jack Haven

Braylin Student

Ethan Phillips

Jill's Father

Betsy Aidem

Jill's Mother

Paula Plum

College President

Allison Gallerani

Braylin Student

Katelyn Semer

Braylin Student

Leah Anderson

Student Giving Directions

Nancy Carroll

Professor

Nancy Giles

President's Assistant

Henry Stram

Cocktail Party Guest

Geoff Schuppert

Cocktail Party Guest

Robert Petkoff

Paul

Alex Dunn

Student in Classroom

Ron Chez

Professor in Cafeteria

Tamara Hickey

Professor in Cafeteria

Sophie von Haselberg

April

Ben Rosenfield

April's Friend

Michael Goldsmith

April's Friend

Lindsay McWhorter

April's Friend

Meredith Hagner

April's Friend

Jamie Rosenstein

April's Friend

Susan Pourfar

Carol

Gary Wilmes

Carol's Friend

David Aaron Baker

Carol's Friend

Nancy Villone

Carol's Friend

Christine Mascott

Waitress

Tom Kemp

Judge Spangler

Britt Faulkner

Student in Classroom

Marina Re

Amusement Park Attendant

David Pittu

Faculty Meeting Professor

Mark Zeisler

Radio Announcer (voice)

Adrienne Taylor

Cellist

Tina Benko

TV Announcer

Kate McGonigle

Ellie

John Franchi

Pedestrian

Jonah Coppolelli

Boy at Amusement Park (uncredited)