This paper summarizes a select set of research studies conducted over the past 40 years, drawing conclusions on trends in public attitudes about the use of wildland fire in federally designated Wilderness. The research includes trend studies conducted with visitors to Wilderness areas in Washington, Oregon, California, Idaho and Montana. Each research study used a unique method for measuring and tracking change in visitor attitudes towards fire in Wilderness. Across all studies, results indicate a trend toward more positive and supportive visitor attitudes about the use of fire in Wilderness. This information is important for understanding if, and how, public attitudes might be changing over time.