Full cast of American Idol

Ryan Seacrest

Self - Host

166 episodes

Lionel Richie

Self - Judge

166 episodes

Luke Bryan

Self - Judge

166 episodes

Katy Perry

Self - Judge

131 episodes

Bobby Bones

Self - Mentor

131 episodes

Carrie Underwood

Self - Judge / Self - Mentor / Self

38 episodes

Alyssa Raghu

Self / Self - Contestant / Self - Auditionee

21 episodes

Maddie Poppe

Self - Contestant / Self / Self - Guest Appearance / Self - Auditionee

21 episodes

Caleb Lee Hutchinson

Self - Contestant / Self / Self - Guest Appearance

19 episodes

Chayce Beckham

Self - Contestant / Self / Self - Auditionee / Self - Performer / Self - Mentor

19 episodes

Noah Thompson

Self / Self - Performer

16 episodes

Iam Tongi

Self - Contestant / Self - Auditionee / Self - Performer

15 episodes

Jamal Roberts

Self - Contestant / Self - Guest Performer / Self - Auditonee / Self

15 episodes

Laine Hardy

Self

14 episodes

Madison VanDenburg

Self

13 episodes

Alejandro Aranda

Self

13 episodes

Laci Kaye Booth

Self

13 episodes

Abi Carter

Self - Contestant / Self - Auditonee / Self

13 episodes

Jeremiah Lloyd Harmon

Self

12 episodes

Wade Cota

Self

12 episodes

Canaan James Hill

Self - Contestant / Self - Guest Performer / Self

12 episodes

Walker Burroughs

Self

11 episodes

Hannah Harper

Self - Contestant

11 episodes

Jordan McCullough

Self - Contestant

11 episodes

Keyla Richardson

Self - Contestant

11 episodes

Uché

Self

10 episodes

Ada Vox

Self - Contestant / Self - Performer

10 episodes

Dimitrius Graham

Self

9 episodes

Eddie Island

Self

8 episodes

Ashley Hess

Self

8 episodes

Jesse Findling

Self - Contestant / Self / Self - Auditonee

8 episodes

Riley Thompson

Self

7 episodes

Evelyn Cormier

Self

7 episodes

Louis Knight

Self - Contestant

7 episodes

Shawn Robinson

Self

6 episodes

Logan Johnson

Self

6 episodes

Braden Rumfelt

Self - Contestant / Self

6 episodes

Kate Barnette

Self

5 episodes

Ryan Hammond

Self

5 episodes

Bumbly

Self

5 episodes

Amelia Hammer Harris

Self - Contestant

5 episodes

Jake Thistle

Self - Contestant / Self

5 episodes

Raquel Trinidad

Self

4 episodes

Gabby Barrett

Self - Contestant / Self - Mentor / Self

4 episodes

Mackenzie Sol

Self - Contestant

4 episodes

Kyana Fanene

Self - Contestant

4 episodes

Phillip Phillips

Self / Self - Mentor

4 episodes

Brad Paisley

Self - Guest Mentor / Self - Guest / Self - Performer

4 episodes

Danielle Fishel

Self - Guest

4 episodes

Keke Palmer

Self - Guest Judge/Mentor / Self - Guest

3 episodes

Kyndal Inskeep

Self - Contestant / Self

3 episodes

Lucas Leon

Self - Contestant / Self

3 episodes

Julián Kalel

Self - Contestant / Self

3 episodes

Daniel Stallworth

Self - Contestant / Self

3 episodes

Adam Lambert

Self

2 episodes

Lea Michele

Self - Special Guest / Self

2 episodes

Bebe Rexha

Self - Special Guest / Self - Performer

2 episodes

Pat Benatar

Self - Guest Mentor / Self

2 episodes

Neil Giraldo

Self / Self - Guest Mentor

2 episodes

Nick Jonas

Self - Mentor / Self - Performer

2 episodes

Jason Mraz

Self / Self - Performer

2 episodes

Scotty McCreery

Self - Performer / Self

2 episodes

Allen Stone

Self - Special Guest / Self - Mentor

2 episodes

Tori Kelly

Self / Self - Performer

2 episodes

Jelly Roll

Self

2 episodes

Lin-Manuel Miranda

Self

2 episodes

Jan Ravnik

Self - Guest

2 episodes

Brett Young

Self

1 episode

Shaggy

Self

1 episode

Elle King

Self

1 episode

Julia Michaels

Self

1 episode

Mitchy Collins

Self

1 episode

Jordan Greenwald

Self

1 episode

Sam Price

Self

1 episode

Cynthia Erivo

Self

1 episode

Rebel Wilson

Self

1 episode

Lauren Daigle

Self

1 episode

Daddy Yankee

Self

1 episode

Avett Maness

Self

1 episode

Hannah Brown

Self

1 episode

Montell Jordan

Self

1 episode

Dan Smyers

Self

1 episode

Shay Mooney

Self

1 episode

Jon Pardi

Self

1 episode

Brian Bell

Self

1 episode

Rivers Cuomo

Self

1 episode

Patrick Wilson

Self

1 episode

Scott Shriner

Self

1 episode

Andra Day

Self

1 episode

Shayy

Self

1 episode

Walt Anderson

Self

1 episode

VoKillz

Self

1 episode

Kane Brown

Self

1 episode

Ben Harper

Self

1 episode

Nick Merico

Self

1 episode

Claudia Conway

Self

1 episode

Jimmie Allen

Self

1 episode

Ryan Tedder

Self

1 episode

Katharine McPhee

Self

1 episode

Brian McKnight

Self

1 episode

Joss Stone

Self

1 episode

Ben Rector

Self

1 episode

Jewel

Self

1 episode

Brandon Boyd

Self

1 episode

Jason Aldean

Self

1 episode

Josh Groban

Self

1 episode

PJ Morton

Self

1 episode

Colbie Caillat

Self - Special Guest

1 episode

Ron Bultongez

Self - Contestant

1 episode

Banners

Self - Special Guest

1 episode

Shannon O'Hara

Self - Contestant

1 episode

Cam

Self - Special Guest

1 episode

Marcio Donaldson

Self - Contestant

1 episode

Jurnee Siani

Self - Contestant

1 episode

Garrett Jacobs

Self - Contestant

1 episode

Mara Justine

Self - Contestant

1 episode

Rachel Platten

Self - Special Guest

1 episode

Effie Passero

Self - Contestant

1 episode

Lukas Graham Forchhammer

Self

1 episode

Shania Twain

Self - Mentor

1 episode

Trevor Holmes

Self - Contestant

1 episode

Catie Turner

Self - Performer

1 episode

Mustard

Self - Performer

1 episode

Cade Foehner

Self - Performer

1 episode

Dennis Lorenzo

Self - Performer

1 episode

Gary Clark Jr.

Self - Performer

1 episode

Darius Rucker

Self - Performer

1 episode

Layla Spring

Self - Performer

1 episode

Dyxie Spring

Self - Performer

1 episode

LeAnn Rimes

Self - Performer

1 episode

Michael J. Woodard

Self - Performer

1 episode

Yolanda Adams

Self - Performer

1 episode

Patti LaBelle

Self - Performer

1 episode

Idina Menzel

Self - Mentor

1 episode

Julia Wolf

Self - Contestant

1 episode

Nutsa Buzaladze

Self - Contestant

1 episode

Lauren Spencer-Smith

Self - Contestant

1 episode

Britani Bateman

Self - Guest

1 episode

Melinda Doolittle

Self - Guest

1 episode

Cheryl Porter

Self - Industry Expert

1 episode

Sasha Farber

Self - Industry Expert

1 episode

Loren Gray

Self - Industry Expert

1 episode

Anthony Gargiula

Self - Industry Expert

1 episode

Shirley Halperin

Self - Industry Expert

1 episode

Kelly Sutton

Self - Industry Expert

1 episode

Terry McCaskill

Self - Industry Expert

1 episode

Kaniyia Brown

Self - Industry Expert

1 episode

Thunderstorm Artis

Self - Performer

1 episode

Ben Platt

Self - Performer

1 episode

Sara Bareilles

Self - Performer

1 episode

Skip Marley

Self - Performer

1 episode

Fantasia Barrino

Self - Performer

1 episode

Benson Boone

Self

1 episode

Chris Martin

Self - Mentor

1 episode

FINNEAS

Self - Mentor/Performer

1 episode

Lindsey Buckingham

Self - Performer

1 episode

Alessia Cara

Self - Performer

1 episode

Luke Combs

Self - Performer

1 episode

Sheryl Crow

Self - Performer

1 episode

Andy Hurley

Self - Performer

1 episode

Pete Wentz

Self - Performer

1 episode

Joe Trohman

Self - Performer

1 episode

Patrick Stump

Self - Performer

1 episode

Mickey Guyton

Self - Performer

1 episode

Chaka Khan

Self - Performer

1 episode

Leona Lewis

Self - Performer

1 episode

Macklemore

Self - Performer

1 episode

Ruben Studdard

Self

1 episode

Jordin Sparks

Self

1 episode

David Cook

Self

1 episode

Lauren Alaina

Self

1 episode

Kris Allen

Self

1 episode

Willie Spence

Self

1 episode

Noah Cyrus

Self - Mentor

1 episode

Kolbi Jordan

Self - Guest Performer

1 episode

Filo Ebid

Self - Guest Performer

1 episode

Luke Tillman

Self - Guest

1 episode

Andrea Barber

Self - Guest

1 episode

Mark Curry

Self - Guest

1 episode

Holly Robinson Peete

Self - Guest

1 episode

Caroline Rhea

Self - Guest

1 episode

Danica McKellar

Self - Guest

1 episode

Reginald VelJohnson

Self - Guest

1 episode

Billy Idol

Self - Performer

1 episode

Liamani Segura

Self - Guest

1 episode

Brendon Tremblay

Self - Guest

1 episode

Kiara T. Romero

Self - Guest

1 episode

Alexandro Byrd

Self - Guest

1 episode

Jennifer Hudson

Self - Guest Judge

1 episode

Nikki Glaser

Self - Guest Judge

1 episode

Paula Abdul

Self - Guest Judge

1 episode

Randy Jackson

Self - Guest Mentor

1 episode

Rylee Arnold

Self - Guest

1 episode

Gleb Savchenko

Self - Guest

1 episode

Witney Carson

Self - Guest

1 episode

Clay Aiken

Self - Performer

1 episode

Gin Blossoms

Self - Performer

1 episode

John Popper

Self - Performer

1 episode

En Vogue

Self - Performer

1 episode

Alicia Keys

Self - Mentor/Performer

1 episode

Nikki Sixx

Self - Performer

1 episode

Tommy Lee

Self - Performer

1 episode

Vince Neil

Self - Performer

1 episode

John 5

Self - Performer

1 episode

Nelly

Self - Performer

1 episode

Shinedown

Self - Performers

1 episode

Cameron Whitcomb

Self - Performer

1 episode

Lee Ann Womack

Self - Performer

1 episode

Chris Tungseth

Self - Contestant

1 episode

Paris Bennett

Self - Mentor/Performer

1 episode

Bucky Covington

Self - Mentor/Performer

1 episode

Taylor Hicks

Self - Mentor/Performer

1 episode

Kellie Pickler

Self - Mentor/Performer

1 episode

Elliott Yamin

Self - Mentor/Performer

1 episode