Mian Muhammad Nawaz Sharif is a Pakistani businessman and politician who served as the Prime Minister of Pakistan for three non-consecutive terms. He is the longest-serving prime minister of Pakistan, having served a total of more than 9 years across three tenures. Each term has ended in his ousting.

The Prime Minister of Pakistan is the head of government of the Islamic Republic of Pakistan. Executive authority is vested in the prime minister and his chosen cabinet, despite the president of Pakistan serving as the nominal head of executive. The prime minister is often the leader of the party or the coalition with a majority in the lower house of the Parliament of Pakistan, the National Assembly where he serves as Leader of the House. Prime minister holds office by virtue of their ability to command the confidence of the National Assembly. The prime minister is designated as the "Chief Executive of the Islamic Republic".