Porter Corners, New York is a hamlet in the town of Greenfield, Saratoga County, New York, United States.

First settled in 1787, it is one of several hamlets within the Town of Greenfield. Early settlers include James Vail and Benjamin Clinch. Asahel Porter, whom the hamlet was named for, settled a few years after 1796 in Porter Corners after removing from St. John’s Corners, another hamlet in Greenfield. Born in Massachusetts in 1768, Porter came to Greenfield in 1793 or 1794, and was a successful businessman. At one point he was sheriff, as well as a member of the State Assembly.

At times throughout its history the hamlet has been home to a hotel, store, bank, two churches, a jail, a saw mill, grist mills, and a carriage shop. Today, the hamlet contains a church, post office, store, fire department, recreational fields, and many dwellings. The current store building dating from the late 1800s is locally known as “Mom and Pop’s” due to a business of the same name operating there until recently for many decades. It was once known as Porter's Corners.

43°08′54″N 73°53′11″W / 43.14833°N 73.88639°W / 43.14833; -73.88639