Full cast of The Big Bang Theory

Johnny Galecki

Leonard Hofstadter

279 episodes

Jim Parsons

Sheldon Cooper

279 episodes

Kaley Cuoco

Penny

279 episodes

Simon Helberg

Howard Wolowitz

279 episodes

Kunal Nayyar

Rajesh Koothrappali

279 episodes

Melissa Rauch

Bernadette Rostenkowski

221 episodes

Mayim Bialik

Amy Farrah Fowler

217 episodes

Kevin Sussman

Stuart Bloom

84 episodes

Carol Ann Susi

Debbie Wolowitz (voice)

40 episodes

John Ross Bowie

Barry Kripke

25 episodes

Laura Spencer

Emily Sweeney

17 episodes

Wil Wheaton

Wil Wheaton

17 episodes

Brian George

V.M. Koothrappali

16 episodes

Christine Baranski

Beverly Hofstadter

16 episodes

Brian Posehn

Bert Kibbler

15 episodes

Laurie Metcalf

Mary Cooper

14 episodes

Joshua Malina

President Siebert

13 episodes

Aarti Mann

Priya Koothrappali

12 episodes

Brian Thomas Smith

Zack Johnson

11 episodes

Pamela Adlon

Halley Wolowitz (voice)

10 episodes

Sara Gilbert

Leslie Winkle

9 episodes

Rati Gupta

Anu

9 episodes

Kate Micucci

Lucy

8 episodes

Lauren Lapkus

Denise

8 episodes

Stephen Hawking

Stephen Hawking

7 episodes

Dean Norris

Richard Williams

6 episodes

Casey Sander

Mike Rostenkowski

6 episodes

Michael J. Massimino

Michael J. Massimino

6 episodes

Regina King

Janine Davis

6 episodes

Bob Newhart

Arthur Jeffries

6 episodes

Alessandra Torresani

Claire

5 episodes

Vernee Watson

Althea

5 episodes

Mark Harelik

Eric Gablehauser

5 episodes

Ed Lieberman

Announcer (voice) / Lecturer (voice) / Man / Man V.O. (voice)

5 episodes

Keith Carradine

Wyatt Teller

5 episodes

Pasha D. Lychnikoff

Dimitri

5 episodes

Margo Harshman

Alex Jensen

4 episodes

Robert Clotworthy

Astronaut (voice) / Dave Roeger (voice) / Train Conductor (voice) / Announcer (voice)

4 episodes

Brian Patrick Wade

Kurt

3 episodes

LeVar Burton

LeVar Burton

3 episodes

Riki Lindhome

Ramona Nowitzki

3 episodes

Kimberly Brooks

Computer (voice) / Automated Cell Phone Voice (voice)

3 episodes

Swati Kapila

Ruchi

3 episodes

Stephen Merchant

Dave Gibbs

3 episodes

Marcus Folmar

Security Guard / Police Officer

3 episodes

Sara Rue

Stephanie Barnett

3 episodes

Ira Flatow

Ira Flatow / Ira Flatow (voice)

3 episodes

Ian Scott Rudolph

Captain Sweatpants (uncredited) / Captain Sweatpants

3 episodes

Jerry O'Connell

Georgie Cooper

3 episodes

Kathy Bates

Mrs. Fowler

3 episodes

Teller

Larry Fowler

3 episodes

Kal Penn

Kevin Campbell

3 episodes

Sean Astin

Greg Pemberton

3 episodes

Erin Allin O'Reilly

Cheryl

2 episodes

James Hong

Chen

2 episodes

Stephen Root

Dan

2 episodes

Dakin Matthews

Santa Claus

2 episodes

Jim Meskimen

Minister / Doctor (voice)

2 episodes

Elena Campbell-Martinez

Maria

2 episodes

Alex Ball

Waiter

2 episodes

Judd Hirsch

Alfred Hofstadter

2 episodes

Annie O'Donnell

Mrs. Fowler / Mrs. Lorvis (voice)

2 episodes

Molly Morgan

Hostess / Bethany

2 episodes

Katie Leclerc

Emily

2 episodes

Katee Sackhoff

Katee Sackhoff

2 episodes

David Trice

Waiter

2 episodes

Josh Brener

Dale

2 episodes

Kevin Brief

Glen / Security Guard

2 episodes

Lance Barber

George Cooper / Jimmy Speckerman

2 episodes

Lio Tipton

Vanessa Bennett / Analeigh Tipton

2 episodes

Bill Nye

Bill Nye

2 episodes

Neil deGrasse Tyson

Neil deGrasse Tyson

2 episodes

Courtney Henggeler

Missy Cooper

2 episodes

Chasty Ballesteros

Karen

2 episodes

David Theune

Dr. Graybel

2 episodes

Michelle Arthur

Mrs. Petrescu

2 episodes

Kevin Smith

Kevin Smith

2 episodes

Caleb Pierce

Jess

2 episodes

Lindsey Kraft

Marissa Johnson

2 episodes

Ellen DeGeneres

Ellen DeGeneres

2 episodes

George F. Smoot

George F. Smoot

2 episodes

Travis Schuldt

Eric

1 episode

Octavia Spencer

Octavia

1 episode

Michael Trucco

David Underhill

1 episode

Summer Glau

Summer Glau

1 episode

Jodi Lyn O'Keefe

Mikayla

1 episode

Lewis Black

Professor Crawley

1 episode

Elizabeth Bogush

Catherine Millstone

1 episode

Yeardley Smith

Sandy

1 episode

Julio Oscar Mechoso

Officer Hackett

1 episode

Judy Greer

Elizabeth Plimpton

1 episode

Steve Wozniak

Steve Wozniak

1 episode

George Takei

George Takei

1 episode

Eliza Dushku

Angela Page

1 episode

Rick Fox

Glenn

1 episode

Jessica Walter

Mrs. Latham

1 episode

Kimberly Kevon Williams

Vicki

1 episode

Andrew W. Walker

Mike

1 episode

Emma Degerstedt

Emma

1 episode

Peter Onorati

Angelo

1 episode

Brooke D'Orsay

Christy Vanderbel

1 episode

Michael Hyatt

Charlotte

1 episode

Will Deutsch

Jeremy

1 episode

Valerie Azlynn

Alicia

1 episode

Oliver Muirhead

Professor Laughlin

1 episode

Danica McKellar

Abby

1 episode

Sherry Weston

Dance Instructor

1 episode

Joel Brooks

Professor Goldfarb

1 episode

Blake Berris

Kevin

1 episode

Courtney Ford

Alice

1 episode

Allen Nabors

Doug

1 episode

Rachel Cannon

Patty

1 episode

Billy Bob Thornton

Oliver Lorvis

1 episode

Kara Luiz

Jeanie

1 episode

James Earl Jones

James Earl Jones

1 episode

Carrie Fisher

Carrie Fisher

1 episode

DJ Qualls

Toby Loobenfeld

1 episode

Sarayu Blue

Lalita Gupta

1 episode

Michael Reetz

Photographer

1 episode

Noel De Souza

Older Indian Man

1 episode

Nathan Fillion

Nathan Fillion

1 episode

Angela Relucio

Hostess

1 episode

Stephanie Escajeda

Cindy

1 episode

Max Adler

Zombie

1 episode

Tate Ellington

Mitchell

1 episode

Michael Dempsey

Security Guard

1 episode

Mark Barrett

Security Guard #2 (voice)

1 episode

Matt Bennett

Josh Wolowitz

1 episode

Rena Strober

Caller (voice)

1 episode

Sara Erikson

Gwen

1 episode

Kelli Goss

Chelsea

1 episode

Phoebe Neidhardt

Casting Assistant

1 episode

Jeff Jingle

Alien (voice)

1 episode

Mark Maitre

Alien #2 (voice)

1 episode

Max Mittelman

Tech Support (voice)

1 episode

Katherine Von Till

Tech Support Recording (voice)

1 episode

Louise Claps

Receptionist

1 episode

Melissa Tang

Mandy Chao

1 episode

Craig Welzbacher

Candidate #1

1 episode

Kurt Koehler

Candidate #2

1 episode

Arshad Aslam

Candidate #3

1 episode

Megan Heyn

Natalie

1 episode

Patrika Darbo

Grace

1 episode

Rebecca Ann Johnson

Attractive Red Head

1 episode

Michael Rapaport

Kenny Fitzgerald

1 episode

Troy Winbush

Paramedic

1 episode

Sophie Oda

Grace

1 episode

Aaron Takahashi

Scientist

1 episode

Barak Hardley

Pizza Delivery Guy

1 episode

Christine Corpuz

Woman

1 episode

Todd Eric Andrews

Dr. Gunderson

1 episode

Ayumi Iizuka

Scientist

1 episode

Adam Nimoy

Adam Nimoy

1 episode

Elon Musk

Elon Musk

1 episode

Wayne Wilderson

Travis

1 episode

Yoshi Barrigas

Trent Monaco

1 episode

Becky O'Donohue

Siri (voice)

1 episode

Jane Kaczmarek

Dr. Gallow

1 episode

June Squibb

Connie Tucker

1 episode

Adam West

Adam West

1 episode

Creagen Dow

Glenn the Maitre D'

1 episode

Shane Blades

Customer

1 episode

Bruce Holman

Airport Pedestrian

1 episode

Jim Holmes

Tim

1 episode

H. Michael Croner

Andre

1 episode

Blake Anderson

Trevor

1 episode

Katey Sagal

Susan Teller

1 episode

Jack McBrayer

Randall Teller

1 episode

Josh Zuckerman

Marty

1 episode

Brandon W. Jones

The Flash

1 episode

Bryan Safi

Daniel

1 episode

Tucker Albrizzi

Christopher

1 episode

Jareb Dauplaise

Jeff

1 episode

Maria Canals-Barrera

Issabella

1 episode

Christopher Lloyd

Theodore

1 episode

Joel Murray

Doug

1 episode

April Bowlby

Rebecca

1 episode

Phil Abrams

Dr. Bernstein

1 episode

Susan Chuang

Dr. Harris

1 episode

George Wyner

Dr. Zane

1 episode

Monica Garcia Pérez

Maria

1 episode

Kaliko Kauahi

Marta

1 episode

Casper Smart

Travis

1 episode

Steve Valentine

Kenneth

1 episode

Kimberly Hébert Gregory

Ms. Davora

1 episode

Phyllis Timbes

Voicemail (voice)

1 episode

Fernando Rivera

Salesperson

1 episode

Rod Keller

Wardrobe Person

1 episode

Gilda Stratton

Flight Attendant (voice)

1 episode

Christopher Neiman

Dr. Dreyfus

1 episode

Eric Petersen

Eric

1 episode

Tania Raymonde

Yvette

1 episode

Josh Peck

Jesse

1 episode

Morgan Hewitt

Lizzy

1 episode

Tom Fonss

Student

1 episode

Beth Behrs

Nell

1 episode

Talbott Lin

Chinese Leonard

1 episode

Walton Goggins

Oliver

1 episode

Charlie Sheen

Charlie Sheen

1 episode

Zachary Abel

Todd

1 episode

Stan Lee

Stan Lee

1 episode

Frank Maharajh

Venkatesh Koothrappali

1 episode

Howard Chan

Chinese Sheldon

1 episode

Judith Moreland

Jan

1 episode

Sarah Buehler

Sarah

1 episode

Ally Maki

Joyce Kim

1 episode

Artie O'Daly

Young Man

1 episode

Ryan Cartwright

Cole

1 episode

Sierra Edwards

Summer

1 episode

Treisa Gary

Waitress

1 episode

Jennifer Hale

News Announcer (voice)

1 episode

Emily Happe

Kathy O'Brien

1 episode

Ronald Hunter

Dan

1 episode

Tyler Jon Olson

Blaine

1 episode

Livia Treviño

Lourdes

1 episode

Travis Davis

Ground Controller (voice)

1 episode

Jane Galloway Heitz

Mildred

1 episode

Andy Mackenzie

Skeeter

1 episode

Steve Paymer

Judge J. Kirby

1 episode

Steven Yeun

Sebastian

1 episode

William Stanford Davis

Dry Cleaner

1 episode

Jim Turner

Reverend White

1 episode

Chuck Carter

Stan

1 episode

Sandra Marquez

Woman

1 episode

Eric André

Joey

1 episode

Lauri Johnson

Mrs. Gunderson

1 episode

Ajgie Kirkland

Louie

1 episode

Arnold Chun

Ho-Jun

1 episode

Tiffany Dupont

Angela

1 episode

Ashley Austin Morris

Laura

1 episode

Stacey Travis

Sandy

1 episode

Buzz Aldrin

Buzz Aldrin

1 episode

Chriselle Almeida

Lakshmi Choudry

1 episode

Nick Clifford

Phil

1 episode

Meagen Fay

Mrs. Rostenkowski

1 episode

Jonathan Schmock

Jonathan

1 episode

Karl T. Wright

Jimmy

1 episode

Matt Battaglia

Officer Reynolds

1 episode

Tiffany Daniels

Clerk

1 episode

Dana L. Wilson

Dr. Sanders

1 episode

Sergio Enrique

Son

1 episode

Charlotte Newhouse

Joy

1 episode

Whitney Avalon

Elsie

1 episode

Lanny Joon

Officer Shin

1 episode

Sharon Omi

Nurse in Biohazard Suit

1 episode

Tom Yi

Dispatcher (voice)

1 episode

Janelle Marra

Claire

1 episode

Jadon Sand

Aaron

1 episode

Lynn Philip Seibel

Professor Rothman

1 episode

Piper Mackenzie Harris

Girl #1

1 episode

Riccardo LeBron

Tom

1 episode

Angela Sargeant

Lana

1 episode

Marissa Cuevas

Danielle

1 episode

Michael Patrick McGill

Police Officer

1 episode

Eric Normington

Man

1 episode

Brian Greene

Brian Greene

1 episode

Chris Reed

Todd Zarnecki

1 episode

Dusan Brown

Jeremy

1 episode

Ken Lerner

Dr. Schneider

1 episode

Craig Gellis

Car Thief #1

1 episode

Diamond White

Girl #2

1 episode

Paul Willson

Professor Sharpe

1 episode

Jeff Witzke

Moviegoer (voice)

1 episode

Josh Banday

Nolan

1 episode

Amanda Payton

Ainsley

1 episode

Brooke Baumer

Denise

1 episode

Elka Rodriguez

Rose Lady

1 episode

Jan Hoag

Lillian

1 episode

Amy Tolsky

Joan

1 episode

Frank Alvarez

Car Thief #2

1 episode

Briana Cuoco

Gretchen

1 episode

Dawson Fletcher

Justin

1 episode

Nicole J. Butler

Clerk

1 episode

Endre Hules

Russian Mission Control (voice)

1 episode

John Mendoza

Chauffeur

1 episode

Rick Gifford

Guy

1 episode

Bill Gates

Bill Gates

1 episode

Giovanni Bejarano

Bellman

1 episode

Ciara Renée

Sunny Morrow

1 episode

Andy Taylor Kim

Tour Guide

1 episode

Luis Aldana

Greg

1 episode

Kikey Castillo

Leslie

1 episode

Matt Knudsen

Waiter

1 episode

Robert Wu

Tam Nguyen

1 episode

Eddie Shin

Dr. Park

1 episode

Alison Martin

Andrea

1 episode

Hermie Castillo

Colin

1 episode

Iain Armitage

Sheldon Cooper

1 episode

Montana Jordan

Georgie Cooper

1 episode

Kurt Scholler

Judge

1 episode

Mark Hamill

Mark Hamill

1 episode

Maribeth Monroe

Dr. Lee

1 episode

Hira Ambrosino

Cynthia

1 episode

Hugh Kennedy

Chad

1 episode

Keili Lefkovitz

Brenda

1 episode

Andy Daly

Nathan

1 episode

Joel McCrary

Andy (voice)

1 episode

Eric Nenninger

Neil

1 episode

Joe Manganiello

Joe Manganiello

1 episode

Kareem Abdul-Jabbar

Kareem Abdul-Jabbar

1 episode

William Shatner

William Shatner

1 episode

Jason Kravits

Danny

1 episode

Ben Rauch

Darren

1 episode

Brooke Dillman

Bebe

1 episode

Doreen Calderon

Woman #1

1 episode

Sarah Eagen

Woman #2

1 episode

Claudia Choi

Woman #3

1 episode

Tiffany Commons

Woman #4

1 episode

Krishna Smitha

Woman #5

1 episode

Angela Lin

Maritza

1 episode

Elijah Isaiah Cook

Terry

1 episode

Todd Giebenhain

Mitch

1 episode

Blair Hickey

Reporter #2

1 episode

Dinora Walcott

Reporter #1

1 episode

Rodney J. Hobbs

Reporter #3

1 episode

Sarah Michelle Gellar

Sarah Michelle Gellar

1 episode

Adam Gregor

Dmitri

1 episode

Jen Drohan

Martha

1 episode

Parvesh Cheena

Marcus

1 episode

Bob Stephenson

Wendell

1 episode

Megan McGown

Cynthia

1 episode

Neil Gaiman

Neil Gaiman

1 episode

Patrick Daniel

Grant

1 episode

Peter MacNicol

Robert Wolcott

1 episode

James Maslow

Bartender

1 episode

Edward James Gage

Nicholas

1 episode

Mark Berry

Pit Boss

1 episode

Evan Charest

Croupier

1 episode

D'Kia Anderson

Hostess

1 episode

Seth Coltan

Earl

1 episode

Ellie Reed

Jenna

1 episode

Mark Hames

Tom

1 episode

Samantha Potter

Model

1 episode

Jade Zdanow

Rebecca

1 episode

Jason Mesches

Denny

1 episode

Leonard Nimoy

Mr. Spock (voice)

1 episode

Cynthia Holloway

Roberta

1 episode

Declan Churchill Carter

Five Year Old

1 episode

Doug Morency

Stranger

1 episode

Cat Hammons

Nurse

1 episode

Joey Rich

Man

1 episode

Jeffrey Cade Ross Brown

Toby

1 episode

Rachna Khatau

Kathleen

1 episode

Laura Cerón

Marta

1 episode

Eileen Galindo

Letty

1 episode

Lynn Andrews

Margaret

1 episode

Shay Ali

Greg

1 episode

Chip Chinery

Bob

1 episode

Minerva García

Linda (voice)

1 episode

Hilda Boulware

Woman

1 episode

Andre Boyer

Kwame

1 episode

Frances H. Arnold

Frances H. Arnold

1 episode

Kip Thorne

Kip Thorne

1 episode

Susan Leslie

Woman #6

1 episode

Cassidey Fralin

Woman #7

1 episode

Riley Go

Woman #8

1 episode

Cleo Fraser

Little Girl

1 episode

Thomas Albany

Carl XVI Gustaf of Sweden

1 episode

Sailah Nicol

Halley Wolowitz

1 episode

Nate Ash

Michael Wolowitz

1 episode

Ulf Bjorlin

Announcer

1 episode

Major Mike

Daniel Westling

1 episode

Stephane Nicoli

Guy at the Movies (uncredited)

1 episode

Howie Mandel

Howie Mandel

1 episode

Jesse Heiman

Comic Book Store Customer (uncredited)

1 episode

Seaonna Chanadet

Eye Rolling Girl Student (uncredited)

1 episode

Bryan Stamp

Library Graduate Student (uncredited)

1 episode

David Barrera

Officer Hernandez

1 episode

Anil Margsahayam

Man

1 episode

Tonja Kahlens

Woman

1 episode

Robert Noble

Older Gentleman

1 episode

Malcolm Foster Smith

Roy

1 episode

Michael Araujo

Stadium Announcer (voice)

1 episode

Netta Most

American Shopper (uncredited)

1 episode

Efrain Gomez

Employee

1 episode

Jeanelle Marie Cruz

Bike Messenger (uncredited)

1 episode

Austin Lee

Dennis Kim

1 episode

Meli Alexander

Cheesecake Factory Patron

1 episode

Brent Spiner

Brent Spiner (uncredited)

1 episode