An important aspect of the Klaus Toepfer Fellowship Programme is its active network of about 100 alumni from 28 countries. The Alumni network opens up opportunities for cooperation between alumni, their institutions, the programme countries, German institutions, trainers and mentors as well as strategic partners.

Alumni activities are planned and implemented jointly by fellows and the organizers of the programme.

Alumni reunions are an important element of the alumni network. Four alumni meetings have taken place so far, in 2015, 2017 and 2023 in Germany, and in 2019 in Georgia. The 2023 meeting involved mostly the fellows from the 5th programme cycle, who had not had a chance to meet on Vilm island before, due to the COVID pandemic. Participants continued learning on management skills by attending advanced level trainings, e.g. on media skills, negotiation and conflict resolution. They also engaged in peer coaching, reflecting their professional situation and the framework conditions for nature conservation within regional subgroups.

Alumni are also already involved in the Klaus Toepfer Fellowship Programme as mentors for the transfer projects of the current fellows and as ambassadors for the recruitment of further fellows.