The 2018 United Nations Climate Change Conference, more commonly referred to as the Katowice Climate Change Conference or COP24, was the 24th Conference of the Parties to the United Nations Framework Convention on Climate Change. It was held between 2 and 15 December 2018 in Katowice, Poland. The conference was held in the International Congress Centre. The president of COP24 was Michał Kurtyka. The conference also incorporated the fourteenth meeting of the parties for the Kyoto Protocol (CMP14), and the third session of the first meeting of the parties for the Paris Agreement which agreed on rules to implement the Agreement. The conference's objective was to have a full implementation of the Paris agreement.

Katowice is the capital city of the Silesian Voivodeship in southern Poland and the central city of the Katowice urban area. As of 2021, Katowice has an official population of 286,960, and a resident population estimate of around 315,000. Katowice is a central part of the Metropolis GZM, with a population of 2.3 million, and a part of a larger Upper Silesian-Moravian metropolitan area that extends into the Czech Republic and has a population of around 5 million people, making it one of the most populous metropolitan areas in the European Union.