| Official Name: | Niagara, Oregon |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Oregon#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Oregon |
| Subdivision Type2: | County |
| Subdivision Name2: | Marion |
| Timezone: | Pacific (PST) |
| Utc Offset: | -8 |
| Timezone Dst: | PDT |
| Utc Offset Dst: | -7 |
| Elevation Ft: | 1129 |
| Coordinates: | 44.7578°N -122.3361°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 97346 |
| Area Code: | 503 and 971 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1166687 |
Niagara is an unincorporated community in Marion County, Oregon, United States.[1] It is the site of the historic Niagara County Park, the first park to be created by the Marion County Park and Recreation Commission.
The park consists of a historic dam, begun in the 1890s.[2] A survey by the University of Oregon's engineering department reported that work on the dam had been abandoned by November 1904.[3]