| State | Afghanistan |
| Treaty | Outer Space Treaty |
| Action Type | Ratification |
| Depositary | Government of the United States of America |
| Date | 21 March 1988 |
| Other Actions | Ratification on deposit with London — 17 March 1988 Ratification on deposit with Moscow — 17 March 1988 Signature on deposit with Moscow — 30 January 1967 Signature on deposit with Washington — 27 January 1967 |