Harford is a town in Cortland County, New York, United States.

In the 1970s, Cornell University bought extensive tracts of land for livestock research.

New York State Route 38 runs diagonally across the southwestern corner of Harford.

The East Branch of Owego Creek, part of the Susquehanna River watershed, flows southward through the town.

The northwest corner of the town drains northward to Virgil Creek, a tributary of Fall Creek, which flows west to Cayuga Lake in Ithaca and is thus part of the Lake Ontario watershed.

Because of the steep hills in the north of the town, the larger settlements are in the south part.