The ESA Polar Science Cluster Collocation Meeting 2026 brings together researchers from ESA-funded Polar Science Cluster projects and the wider polar research community to exchange scientific results, identify emerging research priorities and strengthen collaboration. The meeting aims to advance the use of Earth Observation in cryospheric science by fostering synergies between satellite observations, in-situ measurements, modelling and innovative methods, while connecting ESA activities with Horizon Europe and other international initiatives.