| Official Name: | Old Chatham, New York |
| Settlement Type: | Hamlet |
| Pushpin Map: | New York |
| Pushpin Label: | Old Chatham |
| Pushpin Map Caption: | Location within the state of New York |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | New York |
| Subdivision Type2: | County |
| Subdivision Name2: | Columbia |
| Subdivision Type3: | Town |
| Subdivision Name3: | Chatham |
| Unit Pref: | Imperial |
| Population As Of: | 2000 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 42.4436°N -73.5592°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 12136 |
| Area Code: | 518 |
Old Chatham is a hamlet in the northeastern quadrant of the town of Chatham, located in Columbia County, New York, United States. It is one of the earliest settlements in the town and was originally named Chatham.[1]
The center of Old Chatham is marked by a few businesses around the intersection of the Albany Turnpike and County Rt. 13. These businesses include the United States Post Office for area code 12136, the Old Chatham Country Store (which includes a cafe/restaurant), and Jackson's Old Chatham House (another restaurant). The Old Chatham Sheepherding Company is also located in Old Chatham. The Wilbor House, also known as The Thompson Farm, was added to the National Register of Historic Places in 1997. Old Chatham is also the headquarters of Blass Communications. The town hosts a parade and sing-along that attracts over 1,000 people annually.