Svend O. Heiberg Memorial Forest is a 3,800-acre (1,500-hectare) research forest located in parts of Onondaga and Cortland counties, and within the towns of Truxton, Preble, Fabius, and Tully in New York State. Originally Tully Experimental Forest, the forest was renamed in 1965 after Svend O. Heiberg, former Associate Dean of Graduate Studies at the New York State College of Forestry at Syracuse University, in Syracuse, New York.