Do any of the people in former Yugoslavia speak Russian?

No, most people in the former Yugoslavia do not speak Russian. The official languages of the countries in the former Yugoslavia are:

- Bosnia and Herzegovina: Bosnian, Croatian, Serbian

- Croatia: Croatian

- Kosovo: Albanian, Serbian

- Montenegro: Montenegrin

- North Macedonia: Macedonian

- Serbia: Serbian

- Slovenia: Slovene

Russian is not widely spoken in any of these countries, as they were part of the former Yugoslavia and not the Soviet Union.