The prime minister of the Republic of Belarus is the deputy head of government of Belarus. Until 1991, it was known as the Chairman of the Council of Ministers of the Byelorussian Soviet Socialist Republic as the head of the government of the constituent republic of the Soviet Union.

The president of the Republic of Belarus is the head of state and head of government of Belarus. The office was created in 1994 with the passing of the Constitution of Belarus by the Supreme Council. This replaced the office of Chairman of the Supreme Council as the head of state. The tasks of the president include executing foreign and domestic policy, defending the rights and general welfare of citizens and residents, and upholding the Constitution. The president is mandated by the Constitution to serve as a leader in the social affairs of the country and to act as its main representative abroad. The duties, responsibilities and other transitional clauses dealing with the presidency are listed in Chapter Three, Articles 79 through 89, of the Constitution.