| Official Name: | Sail Harbor, Connecticut |
| Settlement Type: | Census-designated place |
| Mapsize: | 250px |
| Pushpin Map: | Connecticut#USA |
| Pushpin Label: | Sail Harbor |
| Pushpin Label Position: | left |
| Coordinates: | 41.5264°N -73.465°W |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Name1: | Connecticut |
| Subdivision Type2: | County |
| Subdivision Name2: | Fairfield |
| Subdivision Type3: | Towns |
| Subdivision Name3: | New Fairfield Sherman |
| Area Footnotes: | [1] |
| Area Total Km2: | 1.63 |
| Area Land Km2: | 1.21 |
| Area Water Km2: | 0.41 |
| Population As Of: | 2020 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 440 |
| Postal Code Type: | ZIP Code |
| Postal Code: | 06812 (New Fairfield) 06784 (Sherman) |
| Area Code: | 203/475 |
| Blank Name: | FIPS code |
| Blank Info: | 09-66113 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2805965 |
Sail Harbor is a census-designated place (CDP) in the towns of New Fairfield and Sherman, Fairfield County, Connecticut, United States. It is in the northeast corner of New Fairfield and the southeast corner of Sherman, on Great Neck and Shelter Harbor, landforms on the west side of Candlewood Lake. It is bordered to the west by Inglenook.
Sail Harbor was first listed as a CDP prior to the 2020 census.