Unlike academic institutions, professional organizations do not use the prestigious title of Doctor Honoris Causa to recognise exceptional individuals from the science and engineering communities. Instead, an equivalent in some way, is the prestige of an Honorary Membership, which is bestowed by the AGM of such professional organizations. Qualifying criteria are primarily achievements in the fields of science, career and social involvement in the organization, both nationally and internationally.
STP has awarded this honour to, amongst others, Professor Olgierd Zienkiewicz, a world-renowned mechanical engineer, who in 2016 was awarded the title of Polish Engineer of the Year. Another recipient of an Honorary Membership is Professor Michał Kleiber, former president of PAN (the Polish Scientific Academy).