Alexander Grigoryevich Lukashenko is a Belarusian politician who has been the president of Belarus since the office's establishment in 1994. This makes him the longest-serving European president.

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.