Rolf Armstrong (April 21, 1889 – February 22, 1960) was an American commercial artist born in Bay City, Michigan, and later residing in Oahu. He specialized in glamorous depictions of female subjects, establishing a career that spanned from 1912 to 1960. Armstrong became primarily associated with magazine covers and calendar art.
Armstrong's artistic output focused on the pin-up style, portraying actresses such as Mary Pickford, Bebe Daniels, Constance Bennett, and Greta Garbo, alongside actors like Boris Karloff and James Cagney. The majority of his original works were executed in pastel. In 1960, The New York Times recognized him as the "creator of the calendar girl," underscoring his influence in this commercial art niche.
