Ragsdill's Crossroads. See Saint Charles.
Randolph-Rogers House, Flenner's Corner See Fitz Randolph-Rogers House
RCA Estate Appliance Co. See Estate Stove Company
Regent Theater, Hamilton. See Grand Theater
Regional Airport. See Butler County Regional Airport-Hogan Field
Reily, Reiley and Riley
Remington Arms Company. See Kings Mills
Renaissance Center. See One Renaissance Center
Rentschler Farm. See Walden Ponds
Richards Spring, also known as the Colerain Turnpike Watering Trough. See Amanda Springs
Richmond & Miami Railroad. See Eaton & Hamilton Railroad Co.
Riverside Natural Area. See Riley's Island
Roberts Corner. See Isis
Rogers House, Flenner's Corner See Fitz Randolph-Rogers House
Ronald Reagan Voice of Freedom Park. See Bethany Station.
Rohrer Distillery. See Mudlick Distillery
Rossville Brewery. See Mason Brewery
Rossville Hydraulic. See Hamilton Hydraulic
Rush Run Lake. See Rush Run Wildlife Area