The society may bestow honorary membership to members and/or other people for their exceptional merits or service to the society or microbiology community at large. Honorary members are exempt from paying membership fees. Honorary membership is normally life-long. Leeuwenhoek medallists are bestowed with honorary membership.
Honorary members (past and current)
1. Prof. Dr. K.C. [Klaas Christiaan] Winkler (NL, † 6 December 1994)
2. Dr. J.C. [Craig] Venter (US, since 14 April 2015)
3. Prof. J.F. [Jillian] Banfield (AU, since 5 April 2023)