Tun Dr. Mahathir bin Mohamad ; born 10 July 1925) is a Malaysian politician. He was the Prime Minister of Malaysia from May 2018 to March 2020. He was also the fourth Prime Minister of Malaysia. He held the job for 22 years from 1981 to 2003. This made him Malaysia's longest-serving Prime Minister. His political career lasted for almost 40 years until briefly retiring. 