The Santiago Fire was a wildfire located near Santiago Canyon in Orange County, California, U.S., and one of thirty California wildfires of October 2007. The fire was intentionally started.

The Orange County Fire Authority (OCFA) is the agency that provides fire protection and emergency medical services for unincorporated areas of Orange County, California as well as 25 cities within the county that contract OCFA's services. There are 7 divisions and 11 battalions.