Crystal Rock is an unincorporated community and census-designated place in Erie County, Ohio, United States.

It is located within Margaretta Township.

Crystal Rock is located in western Erie County, in the northwestern part of Margaretta Township, on the south shore of Sandusky Bay, an arm of Lake Erie.

It is 8 miles (13 km) west of the city of Sandusky.

This Northwest Ohio location article is a stub.