John Cosby was born in Hollywood, California in 1955
His professional artist memberships include the California Art Club, Laguna Plein Air Painters Association, and Plein Air Painters of America. His art has been featured in Southwest Art Magazine.

The art of John Cosby is or has been exhibited in museums, galleries and art fairs including but not necessarily limited to the following:
American Legacy Fine Arts, Pasadena, CA
Bowers Museum, Santa Ana, CA
Cape Cod Museum of Art, Dennis, MA
Carmel Fine Art, Carmel, CA
Casa Romantica, San Clemente, CA
Coastal Splendor Plein Air Invitational, Crystal Cove, CA 
Conservancy Show, Catalina Island, CA
Cosby Studio, San Clemente, CA
Desert Plein Air, La Quinta, CA 
Haggin Museum, Stockton, CA
Helena Fox Fine Art, Charleston, SC
Heritage Art Show, San Juan Capistrano, CA 
Irvine Museum, Irvine, CA
John Cosby Gallery, Newport Beach, CA
Laguna Art Museum, Laguna Beach, CA
Plein Air in the Park, Paso Robles, CA
Plein Air Painting Invitational, Laguna Beach, CA
Redfern Gallery, Laguna Beach, CA
Roger’s Gardens, Newport Beach, CA
Vanessa Rothe Fine Art, Laguna Beach, CA
Village Gallery, Laguna Beach, CA
Village Gallery, Lake Forest, CA
Waterhouse Gallery, Santa Barbara, CA
Weisman Art Museum, Malibu, CA