| Official Name: | Schaefer Lake, Indiana |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Indiana#USA |
| Pushpin Label: | Schaefer Lake |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Bartholomew |
| Subdivision Type3: | Township |
| Subdivision Name3: | Haw Creek |
| Area Footnotes: | [1] |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 0.35 |
| Area Land Sq Mi: | 0.22 |
| Area Water Sq Mi: | 0.12 |
| Population As Of: | 2020 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 699 |
| Coordinates: | 39.2839°N -85.7511°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 47246 (Hope) |
| Area Code: | 812 & 930 |
| Blank Name: | FIPS code |
| Blank Info: | 18-68202 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2830317 |
Schaefer Lake is an unincorporated community and census-designated place (CDP) in Bartholomew County, Indiana, United States. It is part of the Columbus, Indiana, metropolitan statistical area.
The community is in northeastern Bartholomew County, built around a reservoir of the same name built on Duck Creek. The town of Hope is to the northwest, while Columbus, the county seat, is to the southwest.
According to the United States Census Bureau, the Schaefer Lake CDP has a total area of 0.35sqmi, of which 0.22sqmi are land and 0.12sqmi, or 35.63%, are water.[1] Via Duck Creek, the lake drains south to Clifty Creek, a west-flowing tributary of the East Fork of the White River.