| Official Name: | Elmo, Wisconsin |
| Pushpin Map: | Wisconsin#USA |
| Pushpin Label: | Elmo |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Grant |
| Subdivision Type3: | Town |
| Subdivision Name3: | Smelser |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 1014 |
| Coordinates: | 42.6428°N -90.4358°W |
| Area Code: | 608 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1577587 |
Elmo is an unincorporated community located in the town of Smelser, Grant County, Wisconsin, United States.
A post office called Elmo was established in 1875, and remained in operation until it was discontinued in 1924.[1] The community was named after the 1866 novel St. Elmo[2] by Augusta Jane Evans.