Rockdale is the name of several places:
Australia Rockdale, New South Wales, Australia City of Rockdale, the former local government area in New South Wales, Australia
United Kingdom Rockdale, a town land in County Tyrone, Northern Ireland
United States Rockdale County, Georgia Rockdale, Illinois, a village Rockdale, Indiana, an unincorporated community Rockdale, Kentucky, an unincorporated community Rockdale (Fallston, Maryland), a home on the National Register of Historic Places Rockdale, New York, a hamlet Rockdale, Pennsylvania, an unincorporated community Rockdale Township, Pennsylvania, a township Rockdale, Texas, a city Rockdale, Washington, a ghost town Rockdale, Wisconsin, a village