| Official Name: | Brownville Junction, Maine |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Maine#USA |
| Pushpin Label: | Brownville Junction |
| Coordinates: | 45.3506°N -69.0536°W |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Name1: | Maine |
| Subdivision Type2: | County |
| Subdivision Name2: | Piscataquis |
| Subdivision Type3: | Town |
| Subdivision Name3: | Brownville |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 0.64 |
| Area Land Sq Mi: | 0.64 |
| Area Water Sq Mi: | 0.00 |
| Area Total Km2: | 1.66 |
| Area Land Km2: | 1.66 |
| Area Water Km2: | 0.00 |
| Population As Of: | 2020 |
| Population Density Km2: | 304.53 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 380 |
| Postal Code Type: | ZIP Code |
| Postal Code: | 04415 (Brownville Junction) 04414 (Brownville) |
| Area Code: | 207 |
| Blank Name: | FIPS code |
| Blank Info: | 23-08360 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2806289 |
| Population Total: | 506 |
| Unit Pref: | Imperial |
| Population Density Sq Mi: | 788.16 |
Brownville Junction is a census-designated place (CDP) in the town of Brownville, Piscataquis County, Maine, United States. It is west-central part of the town, on the west side of the Pleasant River, a south-flowing tributary of the Piscataquis River and part of the Penobscot River watershed. Maine State Route 11 passes through the community, leading south 3miles to Brownville village and 7miles to Milo, and northeast to Millinocket.
The community came into existence in 1889 when the Canadian Pacific Railway built the International Railway of Maine as part of its transcontinental railroad, connecting Montreal, Quebec, with Saint John, New Brunswick. The railway crossed the older Bangor and Katahdin Iron Works Railway at the location that became the village. The rail lines are currently owned by the CPKC Railway after a period of different ownership.
Brownville Junction was first listed as a CDP prior to the 2020 census.