| 1 Security Forces Squadron | |
|---|---|
 | |
| Active | 1 October 1992 – present |
| Branch | RAAF |
| Role | Air Force Infantry |
| Part of | Combat Support Group |
| Garrison/HQ | RAAF Base Williamtown |
| Motto(s) | "First to Defend" |
No. 1 Security Forces Squadron (1SECFOR) is a Royal Australian Air Force (RAAF) military unit whose primary role is to protect and secure airfields, buildings, equipment, and personnel.