| Official Name: | Mayville, Oregon |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Oregon#USA |
| Pushpin Label: | Mayville |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Oregon |
| Subdivision Type2: | County |
| Subdivision Name2: | Gilliam |
| Timezone: | Pacific (PST) |
| Utc Offset: | -8 |
| Timezone Dst: | PDT |
| Utc Offset Dst: | -7 |
| Elevation Ft: | 2963 |
| Coordinates: | 45.0822°N -120.1922°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 97830 |
| Area Code: | 458 and 541 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1123881 |
Mayville is an unincorporated community in Gilliam County, Oregon, United States. It is located on Oregon Route 19. According to 1909 Oregon law, Mayville was the permanent meeting place of the board of commissioners of Gilliam and Wheeler counties. They met in Mayville each year to elect the president of the board.[1] A post office was established in Mayville and "put in operation in October 1884 with Samuel Thornton postmaster."[2] The community's name was originally made by Thornton's wife.