Rowan Blanchard

Riley Matthews

Sabrina Carpenter

Maya Hart

Peyton Meyer

Lucas Friar

Corey Fogelmanis

Farkle Minkus

August Maturo

Auggie Matthews

Ben Savage

Cory Matthews

Danielle Fishel

Topanga Matthews

Ceci Balagot

Isadora Smackle

Danielle Kennedy

The Librarian

Olivia Stuck

Missy Bradford

Kristanna Loken

Jennifer Bassett Minkus

Ross Lynch

Austin Moon

Aramis Knight

Brandon

Nathaniel J. Potvin

Academic Top Half

Ricky Garcia

Asher Garcia

Kamran Lucas

Academic Bottom Half

Joshua Hoffman

Dylan Orlando

Devan Key

Alternate Lucas

Uriah Shelton

Joshua Matthews

Justin Ellings

Billy

Matthew Lawrence

Jack Hunter

Tanner Buchanan

Charlie Gardner

Curran Walters

Evan

Benjamin Wadsworth

Jordan

Luke Benward

Thor

Nicolas Bechtel

Monster Under The Bed / Simon P. Littleboyeater

Charlotte Rae

Gammy Hart

Samantha Boscarino

Sophie Miller

Rider Strong

Shawn Hunter

Betsy Randle

Amy Matthews

William Russ

Alan Matthews

Anthony Tyler Quinn

Jonathan Turner

Lily Gibson

Morgan Matthews (as Lily Nicksay)

Lindsay Ridgeway

Morgan Matthews

William Daniels

George Feeny

J.B. Gaynor

T.J. Murphy

Tess Paras

TV Newscaster

Lamont Thompson

Zachary T. Wolff

Nicholas Hormann

Senator Jefferson Davis Graham

Lee Norris

Stuart Minkus

Danny McNulty

Harvey "Harley" Keiner

Cheryl Texiera

Katy Hart

Will Friedle

Eric Matthews

Mekai Curtis

Felix Shumpert

Shak Ghacha

Joey Ricciardella

Cyrina Fiallo

Ms. Oben

Jackée Harry

Evelyn Rand

Sanai Victoria

Emma Weathersby

Claudia Lee

Francesca

Jack Doke

Timmy McCullough

Brandon Johnston

Genius Clone

Mitch Johnston

Original Genius

Kurt Collins

Dweezil

Taylar Hollomon

Myzell

Sari Arambulo

Allison

Phil Idrissi

Eugene

Sonya Eddy

Geralyn Thompson

Zachary Mitchell

Billy Ross

Ava Kolker

Ava Morgenstern / Marisol de la Cruz

Herbie Hancock

Self

Jane Lynch

Self

Samuel Caruana

Sheldon

Reagan Pasternak

Judy Morgenstern

Sarah Carpenter

Sarah (uncredited)

Cody Benjamin Lee

Cisco

Cloris Leachman

Mrs. Svorski

Delon de Metz

Mr. Martinez

Amir Mitchell-Townes

Zay Babineaux

Laura Marano

Ally Dawson

Madison McLaughlin

Jasmine

Cynthy Wu

Charlotte

Tajh Bellow

Andrew

Trina McGee

Angela Moore

Blake Clark

Chet Hunter

Stuart Pankin

Principal Yancy

Tania Gunadi

Harper Burgess

Christian Weissmann

Nerd

Hugh Dane

Phil

Phil Morris

Agent LaChance

Aisha Kabia

Gabriella Kossal

Alyssa Jirrels

Chai

Ashley Argota

Nikki

Billy Gardell

Coach Bobby Campagnola

Brian Scolaro

Mr. Fanucchi

Brittany Ross

Ghost

Candi Milo

Rodeo Waitress

Carl Tart

Restaurant Manager

Chandler Kinney

Vanessa

Cooper J. Friedman

Doy

Daniella Taylor

Zoe

David Thomas Jenkins

Kermit Hart

Diamond White

Sage

Diana Maria Riva

Chairperson Sanchez

Diona Reasonover

Sister Mary Beth

Don McManus

D.W. Preminger

Emily Robinson

Amy

Gianna LePera

Sofia

Gideon Adlon

Felicity

Ivy George

Young Maya

Jeff Doucette

Mr. Norton

Jennifer Hasty

Coach Jackie Kelly

Justin Dray

Two Shoes Louie

Katie Sarife

Marly Evans

Ken Hudson Campbell

Jingles the Clown

Kylee Russell

Renee

Lindsey Lamer

Young Riley

Madison Mason

McCullough

Mark Cuban

Self

Mia Xitlali

Carla

Michael Connor Gainey

Pappy Joe

M.C. Gainey

Nigel Suarez

Nigel

Perez Hilton

Himself

Reginald VelJohnson

Officer James

Ruby Lewis

Adult Maya

Stephanie Lemelin

Anastasia Boulangerie

Tahmus Rounds

Cletis