| Official Name: | Chestnut Hill, Pennsylvania |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Pennsylvania#USA |
| Pushpin Label: | Chestnut Hill |
| Pushpin Map Caption: | Location of Chestnut Hill in Pennsylvania |
| Coordinates: | 40.7225°N -75.2061°W |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Northampton |
| Subdivision Type3: | Township |
| Subdivision Name3: | Forks |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 3.07 |
| Area Land Sq Mi: | 3.03 |
| Area Water Sq Mi: | 0.04 |
| Area Total Km2: | 7.94 |
| Area Land Km2: | 7.85 |
| Area Water Km2: | 0.09 |
| Population As Of: | 2020 |
| Population Density Km2: | 851.78 |
| Population Metro: | 865,310 (US: 68th) |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 310 |
| Postal Code Type: | ZIP Code |
| Postal Code: | 18040 (Easton) |
| Area Code: | 610 and 484 |
| Blank Name: | FIPS code |
| Blank Info: | 42-13336 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2805581 |
| Population Total: | 6689 |
| Unit Pref: | Imperial |
| Population Density Sq Mi: | 2206.13 |
Chestnut Hill is an unincorporated community and census-designated place (CDP) in Northampton County, Pennsylvania, United States. It was first listed as a CDP prior to the 2020 census. Its population as of the 2020 census was 6,689. It is part of the Lehigh Valley metropolitan area, which had a population of 861,899 and was the 68th-most populous metropolitan area in the U.S. as of 2020.
Chestnut Hill is on the eastern edge of Northampton County, in the southeastern quadrant of Forks Township. It is bordered to the south by the city of Easton and to the east by the Delaware River, which forms the Pennsylvania–New Jersey border. It is bordered to the west by Sullivan Trail (old Pennsylvania Route 115), which leads northwest 4miles to Stockertown. Pennsylvania Route 611 follows the Delaware River along the eastern edge of Chestnut Hill, leading south into Easton and northeast to Portland.
Chestnut Hill is a 219m (719feet) ridge which runs along the southern border of the CDP, overlooking the Delaware River.