| State | San Marino |
| Treaty | Outer Space Treaty |
| Action Type | Ratification |
| Depositary | Government of the United Kingdom |
| Date | 3 February 1969 |
| Other Actions | Signature on deposit with London — 24 April 1967 Signature on deposit with Moscow — 6 June 1967 Ratification on deposit with Moscow — 21 November 1968 Signature on deposit with Washington — 21 April 1967 Ratification on deposit with Washington — 29 October 1968 |