Leibniz Institute for Educational Trajectories (LIfBi, affiliated with the University of Bamberg, Germany) uses LimeSurvey for scientific surveys and administrative inquiries.

University of Indonesia is using Limesurvey. You can visit ui.ac.id and survey.ui.ac.id

L'université de Fribourg (Switzerland) is using Limesurvey

University of Hamburg (Germany) uses it. Have to pursue them to upgrade to LS 3 though.

The Uppsala Social Robotics Lab (at with Uppsala Universitet, Sweden) is currently exploring limesurvey as an option for research.

Bilecik Şeyh Edebali Üniversitesi (Turkey) is using LimeSurvey.

University of Geneva, Switzerland, unige.ch , and it's a very reliable product

Tampere University (second biggest in Finland, about 19000 students plus more in related university of applied sciences) has made a formal decision to use MS Forms for most surveys and LimeSurvey for about everything that can not be done with Forms. Some groups uses REDCap.

I suppose we will have 2000..4000 surveys per year, and maybe 10 % of them at LimeSurvey.