Roger Armstrong was born in 1917, in Los Angeles, California.
He died in 2007, in Mission Viejo, California.

He studied at Pasadena City College in Pasadena, CA, and at the Chouinard Art Institute in Los Angeles, CA.

He was an award-winning cartoonist. He created cartoons for major animation studios including Disney, Hanna Barbera, Walter Lantz, and Warner Bros.

He taught art at the Art Institute of Southern California in Pasadena, California, Laguna Beach School of Art in Laguna Beach, California, and at Orange Coast College in Costa Mesa, California.

Roger Armstrong held memberships in the following organizations:
Artists Equity
California Watercolor Society
Laguna Beach Art Association
Los Angeles Art Association
National Cartoonist's Society
National Watercolor Society
Niguel Art Association
San Luis Obispo Art Association

The art of Roger Armstrong is or has been exhibited in museums, galleries, and art fairs including but not necessarily limited to the following:
Festival of the Arts, Laguna Beach, CA
Irvine Fine Arts Center, Irvine, CA
Laguna Art Museum, Laguna Beach, CA
Museum of Cartoon Art, Port Chester, NY
National Watercolor Society, San Pedro, CA
Ohio State University, Columbus, OH
Orange County Museum, Santa Ana, CA
Pico Rivera Art Festival, Pico Rivera, CA
Political Cartoon Gallery, London, England
Rio Hondo College, Whittier, CA
Samuel Collection, San Diego, CA
San Luis Obispo Museum of Art, San Luis Obispo, CA
Smithsonian Institute, Washington, DC