The Commission Internationale de Microflore du Paléozoique (C.I.M.P.) is an international federation of palynologists interested in Palaeozoic palynology.

The commission aims to advance knowledge in palynology and related subjects by the promotion of international co-operation and meetings between scientists of all regions and countries.

To this end the C.I.M.P. arranges symposia and working groups which deal with various stratigraphical and taxonomic problems in Palaeozoic palynology.