| 166th Air Refueling Squadron | |
|---|---|
 KC-135R Stratotanker (s/n 61-0264), deployed from the 121st Air Refueling Wing, Ohio Air National Guard, takes off for an aerial refueling mission from Andersen Air Force Base, Guam, on 4 October 2007. | |
| Active | 1942–Present |
| Country |  United States |
| Allegiance |  Ohio |
| Branch |  Air National Guard |
| Type | Squadron |
| Role | Air Refueling |
| Part of | Ohio Air National Guard |
| Garrison/HQ | Rickenbacker Air National Guard Base, Columbus, Ohio |
| Tail Code | "Block O" Red Tail Stripe |
| Insignia | |
| 166th Air Refueling Squadron emblem |  |
The 166th Air Refueling Squadron (166 ARS) is a unit of the Ohio Air National Guard 121st Air Refueling Wing located at Rickenbacker Air National Guard Base, Columbus, Ohio. Since 1993 the 166th has been equipped with ten KC-135R Stratotankers.
Prior to 1993, the unit was known as 166th Tactical Fighter Squadron (166 TFS), operating a variety of fighter and ground-attack aircraft including Republic F-84 Thunderjet, North American F-100 Super Sabre and LTV A-7 Corsair II.