Barys Kit (born April 6, 1910) is a Belarusian mathematician physicist and chemist. His family escaped from the Red Revolution in Russia. Kit lived at time in Germany and the USA, where he started to work by NASA. His mathematical work allowed the flight to the moon. Kit supports Ronald Reagan, for his fight against Communism and Harry S. Truman for his support of immigrants. He opposes the currently president of Belarus Alexander Lukashenko.