There are the following regular Free Software related activities in or near Minsk, Belarus:
Minsk Linux User Group: monthly meetings on last Saturdays of each month.
Last MLUG meeting was happening on May 26 2018 at Minsk, Filimonau 15.
Events/2022/GNU/Linux and Free Software enthusiast meeting near Minsk, Belarus is planning now, please save the date!
Linux Vacation / Eastern Europe: biannual conference took place on August 23—26 2018 (Abstracts).