| Arno, Missouri | |
| Native Name Lang: | EN |
| Settlement Type: | Community |
| Pushpin Map: | Missouri#USA |
| Pushpin Map Alt: | Location of Arno, Missouri |
| Pushpin Map Caption: | Location of Arno, Missouri |
| Coordinates: | 36.94°N -92.7472°W |
| Coordinates Footnotes: | [1] |
| Subdivision Type: | Country |
| Subdivision Name: | U. S. A. |
| Subdivision Type1: | State |
| Subdivision Name1: | Missouri |
| Subdivision Type2: | County |
| Subdivision Name2: | Douglas County |
| Elevation M: | 330 |
| Population Density Km2: | auto |
| Timezone1: | CST |
| Utc Offset1: | -6 |
| Timezone1 Dst: | CDT |
| Utc Offset1 Dst: | -5 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 713392 |
Arno is an unincorporated community in western Douglas County, Missouri, United States. Arno is located just east of the confluence of Beaver and Cowskin creeks, approximately five miles west of Ava.[1]
Arno was founded in about 1857 in Taney County and the area became part of Douglas County in 1864. Arno was temporarily the county seat of Douglas County in 1869 replacing Vera Cruz. In 1870 Ava became the county seat. Arno post office operated from 1857–63 in Taney County and 1867–1933 in Douglas County.[2] [3]
In 1925, Arno had 31 inhabitants.[4]