Roger Whitlock has been painting in watercolor since 1985. He is a signature member of the Hawai’i Watercolor Society and the Northwest Watercolor Society. Since 1993, he has had over twenty solo shows and has participated in many group shows, both in Hawai’i and on the mainland, and in recent international exhibitions in Taipei City, Taiwan, Sao Paolo, Brazil, and Incheon, Korea. Reviewing one of his solo shows, Honolulu Advertiser art critic Virginia Wageman wrote: “In his ever-shifting focus on subjects, bringing variety to an exceptional oeuvre, Roger Whitlock is one of Hawai’i’s premier watercolorists.” 

In 2001, Watercolor Magic recognized Whitlock as one of 15 American watercolor painters “to watch.” In 2008, he was named by Honolulu Magazine as one of “9 Hawai’i Artists to Collect.”  Recently, Watercolor Artist featured his art in an article called "Twelve by Two" (Aug. 2010). A native of Seattle, he has lived in Honolulu since 1970. He currently teaches the advanced watercolor class at the Honolulu Academy of Arts. His work is in many private and corporate collections; it is also in the collections of the Honolulu Academy of Arts and the State of Hawai'i.