| State | Mexico |
| Treaty | Outer Space Treaty |
| Action Type | Signature |
| Depositary | Government of the United Kingdom |
| Date | 27 January 1967 |
| Other Actions | Ratification on deposit with London — 31 January 1968 Signature on deposit with Moscow — 27 January 1967 Ratification on deposit with Moscow — 31 January 1968 Signature on deposit with Washington — 27 January 1967 Ratification on deposit with Washington — 31 January 1968 |