Ellar Coltrane as Mason

Patricia Arquette as Mom

Ethan Hawke as Dad

Lorelei Linklater as Samantha

Libby Villari as Grandma

Marco Perella as Professor Bill Welbrock

Brad Hawkins as Jim

Jamie Howard as Mindy

Andrew Villarreal as Randy

Jenni Tooley as Annie

Zoe Graham as Sheena

Charlie Sexton as Jimmy

Elijah Smith as Tommy

Steven Chester Prince as Ted

Bonnie Cross as Teacher

Sydney Orta as Elementary School Girl

Shane Graham as Neighborhood Friend #1

Tess Allen as Neighborhood Friend #2

Ryan Power as Paul

Sharee Fowler as Book Trivia Judge

Mark Finn as Book Release Emcee

Byron Jenkins as Barber

Holly Moore as Mason's 4th Grade Teacher

David Blackwell as Liquor Store Clerk

Barbara Chisholm as Carol

Matthew Martinez-Arndt as Lee

Cassidy Johnson as Abby

Cambell Westmoreland as Kenny

Jennifer Griffin as Mrs. Darby

Garry Peters as No Obama Man

Merrilee McCommas as Obama Mama

Tamara Jolaine as Tammy

Jordan Howard as Tony

Andrew Bunten as Bully 1

Tyler Strother as Bully 2

Evie Thompson as Jill

Savannah Welch as College Girl Singer

Mika Odom as Gabi

Sinjin Venegas as Chase

Nick Krause as Charlie

Derek Chase Hickey as Charlie's Friend

Angela Rawna as Professor Douglas

Megan Devine as Make Out Girl

Landon Collier as Cooper

Roland Ruiz as Ernesto

Richard Andrew Jones as Grandpa Cliff

Karen Jones as Nana

Gordon Friday as Pastor

Tom McTigue as Mr. Turlington

Sam Dillon as Nick

Martel Summers as Beer Pong Guy

David Clark as High School Band Singer

Jessie Tilton as April

Richard Robichaux as Mason's Boss

Will Harris as Sam's College Boyfriend

Indica Shaw as Hooper

Bruce Salmon as Guitar Player

Wayne Sutton as Beat Box

Joe Sundell as Band Member 1

Sean Tracey as Band Member 2

Ben Hodges as Band Member 3

Daniel Zeh as Band Member 4

Chris Doubek as Guy in Diner

Andrea Chen as Sam's Roommate

Mona Lee Fultz as High School Teacher

Bill Wise as Uncle Steve

Alina Linklater as Twin Cousin 1

Charlotte Linklater as Twin Cousin 2

Genevieve Kinney as Woman at Party

Elijah Ford as Jimmy's Bandmate 1

Kyle Crusham as Jimmy's Bandmate 2

Conrad Choucroun as Jimmy's Bandmate 3

Maximillian McNamara as Dalton

Taylor Weaver as Barb

Jessi Mechler as Nicole

Deanna Brochin as College Student (uncredited)

Stephen Latham as Late Night Restaurant Patron (uncredited)

Heather Materne as Parent (uncredited)

Johnny Walter as Dinner Guest (uncredited)

Natalie Makenna as College Student (uncredited)

Ken Edwards as Dinner Guest (uncredited)