The Long Island Rail Road Demonstration Farm was an American demonstration farm project on Long Island, New York. It was conducted by the Long Island Rail Road (LIRR) in the early years of the 20th century. Experimental Station No. 1 was built up in the North Shore pine barrens at Wading River by the Wading River station (1905-1928), and Station No. 2, cleared from the middle Long Island scrub-oak wastes at Medford by the Medford station (1907-1927).