Where does “Минск” come from?

Минск (Russian) comes from Polish Mińsk, from Belarusian Мінск, from Old East Slavic Мѣньскъ.

Ancestry of “Минск”, step by step

Step	Language	Word	Meaning
1	Polish	Mińsk	—
2	Belarusian	Мінск	—
3	Old East Slavic	Мѣньскъ	—

Минск — Etymology, Origin & Word History | Etymology Explorer