Park Layne is a census-designated place (CDP) in Bethel Township, Clark County, Ohio, United States.

Park Layne became a CDP in the 1980 United States census.

[citation needed] Park Layne is located in southwestern Clark County on the western edge of Bethel Township.

It is bordered to the east by the census-designated place (CDP) Crystal Lakes and to the west by Bethel Township in Miami County.

Park Layne Elementary School is located in the northwest corner of the CDP.

Ohio State Route 235 (South Dayton-Lakeview Road) passes through the community, leading north 3.5 miles (5.6 km) to New Carlisle and south 1.5 miles (2.4 km) to Interstate 70 at Exit 41.

Downtown Dayton is 14 miles (23 km) southwest of Park Layne.

According to the United States Census Bureau, the CDP has a total area of 1.5 square miles (3.8 km2), all of it land.

17% of all households were made up of individuals, and 4.9% had someone living alone who was 65 years of age or older.

17.2% of all households were made up of individuals, and 8.7% had someone living alone who was 65 years of age or older.

17.5% of all households were made up of individuals, and 6.0% had someone living alone who was 65 years of age or older.