The Last Man on Earth

Earle Foxe

Elmer Smith

Grace Cunard

Gertie

Maurice Murphy

Elmer's Pal

Clarissa Selwynne

Dr. Prodwell

Fay Holderness

Elmer's Mother

Marion Aye

Red Sal

Harry Dunkinson

Elmer's Father

Pauline French

Furlong

Buck Black

Elmer - age 8 (prologue)

William Steele

Hattie's Father (prologue)

Anita Garvin

A Millionairess (uncredited)

Martha Mattox

President of the United States (uncredited)

Gladys Tennyson

Frisco Kate

Derelys Perdue

Hattie

Marie Astaire

Paula Prodwell

Jean Johnston

Hattie - age 6 (prologue)

Jean Dumas

Hattie's Mother (prologue)

Lois Boyd

Undetermined Secondary Role (uncredited)

Joan Meredith

Undetermined Secondary Role (uncredited)