ARIEL 3
| Launched | 4 May 1967 |
| Flight ended | 13 December 1970 |
| Status | Decayed |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United Kingdom |
| NORAD ID | 2773 |
| COSPAR ID | 1967-042A |
| Alternative names |
UK-3 |
| Observing |