| Biddle Air National Guard Base | |
| Location: | Horsham Township, Pennsylvania |
| Country: | the United States of America |
| Type: | Air National Guard Base |
| Coordinates: | 40.209°N -75.145°W |
| Pushpin Map: | USA |
| Pushpin Map Caption: | Location in the United States |
| Pushpin Label: | Horsham |
| Ownership: | Department of Defense |
| Operator: | US Air Force (USAF) |
| Controlledby: | Pennsylvania Air National Guard |
| Built: | , as Pitcairn Field No. 2[1] |
| Used: | –present (by PA ANG) |
| Builder: | Pitcairn Aircraft Company |
| Condition: | Operational |
| Garrison: | 111th Attack Wing (Host) |
| Occupants: |
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Biddle Air National Guard Base (formerly Horsham Air Guard Station, 2011–2021) is owned by the Pennsylvania Air National Guard and located in Horsham Township, Montgomery County, Pennsylvania, United States. The Air National Guard plays host to many different Army National Guard Units as well as other government agencies. The site was formerly the Naval Air Station Joint Reserve Base Willow Grove. It was renamed in honor of Charles Biddle, the founder of the Pennsylvania Air National Guard's 103rd Observation Squadron (now, the 103rd Attack Squadron).[2]
Biddle Air National Guard Base is home to the following: