| Official Name: | Arkmo |
| Pushpin Map: | Arkansas#USA |
| Pushpin Map Caption: | Location of Arkmo in Arkansas, with Missouri to the north |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | States |
| Subdivision Name1: | Arkansas and Missouri |
| Subdivision Type2: | County |
| Subdivision Name2: | Mississippi (Arkansas) and Dunklin (Missouri) |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 243 |
| Coordinates: | 35.9967°N -90.2475°W |
| Blank Name: | GNIS feature ID |
| Blank Info: | 61892 |
Arkmo is an unincorporated community located in both Mississippi County, Arkansas and Dunklin County, Missouri, United States. Arkmo is situated at the junction of Arkansas Highway 77 and Missouri Route 108, 3.5miles south of Arbyrd; the community primarily lies on the Missouri side of the border.[1] [2]