Environment & climate
Montreal Protocol on Substances that Deplete the Ozone Layer
Source: UN Treaty Collection · scraped 2026-09-26
Figures below count the 193 UN member states separately from other parties to this treaty (international organizations and non-member observer states) — a treaty can have more parties than there are UN member states.
193/193
RatifiedUN member states
198 in total, incl. 5 non-UN members (Cook Islands, European Union, Holy See, Niue, State of Palestine)
0
Signed, not ratifiedUN member states
0
WithdrawnUN member states
0
No actionUN member states
| Country | Signature | Ratification | Withdrawal | Status |
|---|
No countries match this filter.