| Official Name: | South Salem, New York |
| Settlement Type: | hamlet |
| Pushpin Map: | New York |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | New York |
| Subdivision Type2: | County |
| Subdivision Name2: | Westchester |
| Subdivision Type3: | Town |
| Subdivision Name3: | Lewisboro |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 541 |
| Coordinates: | 41.2722°N -73.5528°W |
| Area Code: | 914 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 965860 |
South Salem is a hamlet in the Town of Lewisboro, Westchester County, in the U.S. state of New York. Part of the New York metropolitan area, the town center has a post office, town hall, library, and recycling center.
Notable residents have included the 33rd Vice President of the United States Henry A. Wallace, Major John Andre (British spy held captive), Rolling Stones guitarist Keith Richards, photographer O. Winston Link, artist Charles Sheeler (American, 1883–1965), pianist Hélène Grimaud, composer and arranger Clare Grundman, singer and musical stage headliner Sally Ann Howes, actress Colleen Dewhurst, bond salesman Joseph Schembri, and notorious real estate scion Robert Durst.
The Osborn–Bouton–Mead House was added to the National Register of Historic Places in 2004.
Katonah–Lewisboro School District serves South Salem.
Meadow Pond Elementary School is in South Salem.