Full cast of Glenn Martin, DDS

Kevin Nealon

Glenn Martin

40 episodes

Catherine O'Hara

Jackie Martin

40 episodes

Judy Greer

Wendy Park (voice)

40 episodes

Jackie Clarke

40 episodes

Peter Oldring

40 episodes

Jennette McCurdy

40 episodes

Elijah Wood

Chester Chislehurst

40 episodes

Alan Tudyk

3 episodes

Phil LaMarr

3 episodes

Will Sasso

2 episodes

Glenn Howerton

2 episodes

Kari Wahlgren

2 episodes

Casey Wilson

2 episodes

Mae Whitman

Trailer Park Teen (voice) / Amish Girl (voice)

2 episodes

Betty White

2 episodes

Jon Polito

2 episodes

Billy Idol

1 episode

Don Johnson

Grandpa Whitey (voice)

1 episode

Randy Sklar

1 episode

Roger Bart

1 episode

Lindsay Sloane

1 episode

Lacey Chabert

1 episode

David Oyelowo

1 episode

Chris Parnell

1 episode

Ty Burrell

1 episode

Joe Lo Truglio

1 episode

Dawnn Lewis

(voice)

1 episode

Enrico Colantoni

(voice)

1 episode

Gene Simmons

1 episode

Elon Gold

1 episode

Wallace Langham

1 episode

Rex Lee

1 episode

Brian Huskey

1 episode

Stephen Root

1 episode

Bobby Slayton

1 episode

Andrea Savage

1 episode

Rachael Harris

1 episode

Michael Welch

1 episode

Howie Mandel

1 episode

Mel Brooks

1 episode

Sam Huntington

(voice)

1 episode

Megan Hilty

1 episode

Justin Kirk

1 episode

Sam McMurray

1 episode

James Madio

1 episode

Keone Young

1 episode

Mike O'Malley

1 episode

Sara Erikson

1 episode

Bret Michaels

1 episode

Gregory Jbara

1 episode

Frank Caliendo

1 episode

MC Hammer

1 episode

Bob Odenkirk

1 episode

Thomas Dekker

(voice)

1 episode

Jim Parsons

Draven (voice)

1 episode

JB Smoove

1 episode

Devon Werkheiser

Corey (voice)

1 episode

Jonathan Frakes

Peter (voice)

1 episode

Phyllis Yvonne Stickney

1 episode