| Official Name: | Ganister, Pennsylvania |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Pennsylvania#USA |
| Pushpin Label: | Ganister |
| Pushpin Label Position: | top |
| Coordinates: | 40.4736°N -78.2267°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Pennsylvania |
| Subdivision Type2: | County |
| Subdivision Name2: | Blair |
| Subdivision Type3: | Township |
| Subdivision Name3: | Woodbury |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 0.01 |
| Area Land Sq Mi: | 0.01 |
| Area Water Sq Mi: | 0.00 |
| Area Total Km2: | 0.04 |
| Area Land Km2: | 0.04 |
| Area Water Km2: | 0.00 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 11 |
| Population Density Sq Mi: | 785.71 |
| Population Density Km2: | 302.81 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 876 |
| Postal Code Type: | ZIP Code |
| Postal Code: | 16693 (Williamsburg) |
| Area Code: | 814/582 |
| Blank Name: | FIPS code |
| Blank Info: | 42-28360 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2805505 |
Ganister is an unincorporated community and census-designated place (CDP) in Blair County, Pennsylvania, United States. It was first listed as a CDP prior to the 2020 census.
The CDP is in eastern Blair County, in the northwestern part of Woodbury Township. It is bordered to the north by the Frankstown Branch Juniata River and to the west by its tributary, Piney Creek. Catharine Township is to the north across the Frankstown Branch.
Pennsylvania Route 866 forms the northeastern border of the Ganister CDP; it leads southeast (downriver) 2miles to Williamsburg and northwest, upriver through the Lock Mountain / Short Mountain water gap, 2miles to U.S. Route 22 near Point View.
The limestone quarry in Ganister is currently owned by Grannas Brothers, Inc.[3]