No. 21 Squadron IAF
| No. 21 Squadron | |
|---|---|
Crest of No. 21 Squadron  | |
| Active | 16 October 1965 – N/A | 
| Country | India | 
| Role | Air Defence Ground attack  | 
| Garrison/HQ | AFS Sirsa | 
| Nickname(s) | "Ankush" | 
| Motto(s) | Siddhirvasti Sahase Success lies in courage  | 
| Aircraft flown | |
| Fighter | MiG-21 bis | 
No. 21 Squadron IAF (Ankush), is an Air Defence and Ground Attack unit of the Indian Air Force, operating from Sirsa AFS, as part of 12 Wing of Western Air Command. The squadron was number plated on an unspecified date.