Answer by Laguzdragon. Confidence votes 1.8K. People in Siberia speak Russian--Siberia is in Russia--and most likely some Mongolian or Chinese in the easternmost parts, since both of those countries border on the region.alaysian people speak Malay or Bahasa Melayu. But in Malaysia, there is also a large Chinese and Indian population. Therefore many speak Chinese and Indian as well. English i … s thought as mandatory second language and therefore most everyone speaks English as well.