A lot! Estimates range from 150-250 million people around the globe who speak Russian as their first language. It's one of the six official languages designated by the UN (along with Arabic, Mandarin Chinese, English, French and Spanish), the most spoken native language in Europe, and the most geographically widespread language in all of Eurasia. Russian is the official language of Russia (of course), Belarus, Kazakhstan, and Kyrgyzstan, and widely used in most of the former USSR nations.