The Vienna Convention for the protection of the Ozone Layer and its Montreal Protocol on substances that deplete the Ozone Layer

The Vienna Convention for the Protection of the Ozone Layer and its Montreal Protocol on Substances that Deplete the Ozone Layer are dedicated to the protection of the earths ozone layer. With 197 parties, they are the most widely ratified treaties in United Nations history, and have, to date, enabled reductions of over 97% of all global consumption of controlled ozone depleting substances (measured in ODP tonnes).

The Ozone Secretariat is the Secretariat for the Vienna Convention and for the Montreal Protocol. Based at the United Nations Environment Programme (UNEP) headquarters in Nairobi (Kenya), the Secretariat functions in accordance with Article 7 of the Vienna Convention and Article 12 of the Montreal Protocol.... More on the Secretariat

Application of paragraph 8 of Article 4 of the Montreal Protocol with respect to the Beijing Amendment to the Montreal Protocol (Decision XXIV/2)

Bangkok, Thailand, 21 - 22 June 2022
50th Meeting of the Implementation Committee Under the Non-Compliance Procedure of the Montreal Protocol
Bangkok, Thailand, 24 - 28 June 2022
33rd Meeting of the Open-Ended Working Group of the Parties to the Montreal Protocol

2012 marks the 25th anniversary of the Montreal Protocol on Substances that Deplete the Ozone Layer - and given our success in achieving reductions that will protect the atmosphere for generations to come, the world community has a lot to celebrate.

Follow the global celebration on our 25th anniversary web page and
Our 25th anniversary Facebook page; and see UNEP's special 25th Anniversary Newsletter


Comments, feedback, queries

We would greatly appreciate your feedback.

Montreal Protocol Press Kit
(Ar) (Ch) (En) (Fr) (Ru) (Sp)