A summary is given of the Third Research Coordination Meeting on Prompt Fission Neutron Spectra of Actinides. Experimental data, modelling and evaluation methods on prompt fission neutron spectra were reviewed. Extensive technical discussions were held on theoretical methods to calculate prompt fission spectra, and on uncertainty analysis of experimental data. Summary reports of selected technical presentations at the meeting are given. All presentations are available online at https://www-nds.iaea.org/index-meeting-crp/PFNS- 3RCM/. The resulting work plan of the Coordinated Research Programme preparing the final technical report is summarized, along with actions and deadlines.