| Official Name: | Island Falls, Maine |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Maine#USA |
| Pushpin Label: | Island Falls |
| Pushpin Label Position: | left |
| Coordinates: | 46.0083°N -68.2686°W |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Name1: | Maine |
| Subdivision Type2: | County |
| Subdivision Name2: | Aroostook |
| Subdivision Type3: | Town |
| Subdivision Name3: | Island Falls |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 1.31 |
| Area Land Sq Mi: | 1.26 |
| Area Water Sq Mi: | 0.05 |
| Area Total Km2: | 3.40 |
| Area Land Km2: | 3.27 |
| Area Water Km2: | 0.13 |
| Population As Of: | 2020 |
| Population Density Km2: | 94.51 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 470 |
| Postal Code Type: | ZIP Code |
| Postal Code: | 04747 |
| Area Code: | 207 |
| Blank Name: | FIPS code |
| Blank Info: | 23-35030 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2804664 |
| Population Total: | 309 |
| Unit Pref: | Imperial |
| Population Density Sq Mi: | 244.85 |
Island Falls is a census-designated place (CDP) and the primary village in the town of Island Falls, Aroostook County, Maine, United States. It is in the northwest part of the town, situated on the West Branch Mattawamkeag River, part of the Penobscot River watershed. U.S. Route 2 passes through the village, leading northeast to Houlton and south to Mattawamkeag. Maine State Route 159 has its eastern terminus at U.S. 2 in the center of Island Falls and leads west 10miles to Patten. Interstate 95 passes just west of the village of Island Falls, with access from Exit 276 (Route 159); I-95 leads northeast to Houlton and southwest to Bangor.
Island Falls was first listed as a CDP prior to the 2020 census.