Clarissa Explains It All

Melissa Joan Hart

Clarissa Darling

Jason Zimbler

Ferguson Darling

Elizabeth Hess

Janet Darling

Joe O'Connor

Marshall Darling

Sean O'Neal

Sam Anders

David Eck

Clifford Spleenhurfer

Nicole Leach

Olivia DuPris

Heather MacRae

Mafalda

Shannon Woodward

Missy

David Singletary

Michael (uncredited)

Sara Burkhardt

Hillary

Susan Greenhill

Debbie

Larry Bucklan

Announcer / Stage Manager

Kristian Truelsen

Mr. Crepplehorn

Jonathan Mangum

Pizza Guy #1

James Van Der Beek

Paulie

JoAnna Garcia Swisher

Fiona

Patricia O'Connell

Kate Whitacre (uncredited)

Sheeri Rappaport

Piper Henderson

James Michael Detmar

Game Show Host