The 14th session of the Conference of the Parties to the UNFCCC and the 4th session of the Conference of the Parties serving as the Meeting of the Parties to the Kyoto Protocol took place in Poznań, Poland and was hosted by the Polish government.

Also sitting were the twenty-ninth sessions of the Subsidiary Body for Implementation (SBI) and the Subsidiary Body for Scientific and Technological Advice (SBSTA), the resumed sixth session of the Ad hoc Working Group on Further Commitments for Annex I Parties under the Kyoto Protocol (AWG-KP), and the resumed third session of the Ad hoc Working Group on Long-term Cooperative Action under the Convention (AWG-LCA).