Richland Farm is a historic home and farm complex located at Clarksville, Howard County, Maryland, United States. The main house is a log and frame house, the earliest section of which is presumed to date from 1719. The main block comprises three sections, with a large addition on the rear added in 1920. It features a one-story shed-roofed wrap-around porch supported by 22 Doric order columns. Also on the property are the Overseer's/Superintendent's House, Gardener's Cottage, wagon shed, tractor shed and smokehouse with board-and-batten siding, a bank barn, a stone spring house and “Barrack.”