| Official Name: | Enemy Swim, South Dakota |
| Settlement Type: | Census-designated place |
| Pushpin Map: | South Dakota#USA |
| Pushpin Label: | Enemy Swim |
| Coordinates: | 45.4319°N -97.2867°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | South Dakota |
| Subdivision Type2: | County |
| Subdivision Name2: | Day |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 1.51 |
| Area Land Sq Mi: | 0.93 |
| Area Water Sq Mi: | 0.57 |
| Area Total Km2: | 3.91 |
| Area Land Km2: | 2.42 |
| Area Water Km2: | 1.49 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Density Km2: | 128.10 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 1870 |
| Postal Code Type: | ZIP Code |
| Postal Code: | 57273 (Waubay) |
| Area Code: | 605 |
| Blank Name: | FIPS code |
| Blank Info: | 46-19556 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2807099 |
| Population Total: | 310 |
| Unit Pref: | Imperial |
| Population Density Sq Mi: | 331.91 |
Enemy Swim is an unincorporated community and census-designated place (CDP) on the Lake Traverse Indian Reservation in Day County, South Dakota, United States. The population was 310 at the 2020 census.[3] It was first listed as a CDP prior to the 2020 census.
It is in the eastern part of the county, surrounding the west cove of Enemy Swim Lake and extending south to include the northwest shore of Campbell Slough. It is 8miles north of Waubay and by road northeast of Webster, the county seat.