Angel Delgadillo is an American barber and businessowner in Seligman, Arizona who has been dubbed the "guardian angel" of U.S. Route 66. He is the main founder of the Historic Route 66 Association of Arizona, established in 1987 to campaign for "Historic Route 66" signage on the former US highway; similar initiatives have since been established in every U.S. Route 66 state.
Over the years, multiple guidebooks and websites from the United States and even the Czech Republic that give information on the road have mentioned him. His late brother Juan operated a Seligman restaurant, Delgadillo's Snow Cap Drive-In.