The proportion of seniors in the Nordic population is increasing, along with rising average age and low birth rate. People of retirement age tend to have more free time and better finance than younger people, and are, in general, in better health than their peers used to be. These people have a lot of experience and knowledge that can be useful in the climate debate. With this in mind, Icelandic authorities initiated a special project on seniors and climate issues during Iceland’s chairmanship of the Nordic Council of Ministers 2023. This report contains the results of this project, incl. mapping of the existence and activities of climate-related groups of older people in the Nordics, a summary from a seminar held in Reykjavík in September 2023 and recommendations to the authorities in the Nordic countries about what they could do to support the work of seniors on climate issues.