Harriet the Spy

Michelle Trachtenberg

Harriet M. Welsch

Rosie O'Donnell

Ole Golly

J. Smith-Cameron

Mrs. Welsch

Eartha Kitt

Agatha K. Plummer

Vanessa Lee Chester

Janie Gibbs

Gregory Smith

Sport

Robert Joy

Ben Welsch

Dov Tiefenbach

Boy with Purple Socks

Charlotte Sullivan

Marion Hawthorne

Teisha Kim

Rachel Hennessy

Cecilley Carroll

Beth Ellen Hansen

Nina Shock

Carrie Andrews

Conor Devitt

Pinky Whitehead

Alisha Morrison

Laura Peters

Nancy Beatty

Miss Elson

Don Francks

Harrison Withers

Eugene Lipinski

George Waldenstein

Gerry Quigley

Sport's Dad

Jackie Richardson

Janie's Mother

Mercedes Enriquez

Windchime Lady

Mung-Ling Tsui

Mrs. Hong Fat

Ho Chow

Mr. Hong Fat

Byron Wong

Frankie Hong Fat

Paul Sun-Hyung Lee

Bruno Hong Fat

Kim Lieu

Paige Hong Fat

Kwok-Wing Leung

Grandpa Hong Fat

Sally Cahill

Maid

Roger Clown

Dr. Wagner

Jamie Jones

Pickpocket

Bob Windsor

Dog Delivery Guy

Gladys O'Connor

Woman with Purse

Vic Ho

Acupuncturist

Maury Chaykin

Holiday Pageant Director (uncredited)

Miranda Jade

Student (uncredited)