Pleasant Run Farm is an unincorporated census-designated place in Hamilton County, Ohio, United States. The population was 4,731 at the 2000 census.

Geography
Pleasant Run Farms is located at 39°17′56″N, 84°32′59″W (39.298758, -84.549735).
According to the United States Census Bureau, the community has a total area of 1.0 square miles (2.7 km²), all of it land.