| Official Name: | Long Lake Colony, South Dakota |
| Settlement Type: | Census-designated place |
| Pushpin Map: | South Dakota#USA |
| Pushpin Label: | Long Lake Colony |
| Coordinates: | 45.6042°N -98.8253°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | South Dakota |
| Subdivision Type2: | County |
| Subdivision Name2: | McPherson |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 0.68 |
| Area Land Sq Mi: | 0.67 |
| Area Water Sq Mi: | 0.01 |
| Area Total Km2: | 1.76 |
| Area Land Km2: | 1.73 |
| Area Water Km2: | 0.03 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Density Km2: | 4.63 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 1470 |
| Postal Code Type: | ZIP Codes |
| Postal Code: | 57481 (Wetonka) 57456 (Leola) |
| Area Code: | 605 |
| Blank Name: | FIPS code |
| Blank Info: | 46-38900 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2807112 |
| Population Total: | 8 |
| Unit Pref: | Imperial |
| Population Density Sq Mi: | 11.99 |
Long Lake Colony is a census-designated place (CDP) and Hutterite colony[3] in McPherson County, South Dakota, United States. It was first listed as a CDP prior to the 2020 census. The population of the CDP was 8 at the 2020 census.[4]
It is in the southeast part of the county, 4miles by road southwest of Wetonka and southeast of Leola, the county seat.