Are there any French colonies or French speaking groups in Russia or Siberia?

Answer 1

Currently, no. People in Russia (and that includes Siberia, which is a region of Russia) speak Russian. Educated people in the 19th century did often speak French or German, thinking that Russian was the language of the peasants, however, this is no longer the case.

Answer 2

Under Catherine the Great, some nobles learned to speak French and Ballet dancers have many terms in French.