Mahathir bin Mohamad ( born 10 July 1925) is a Malaysian politician, author, and doctor who served as the fourth and seventh Prime Minister of Malaysia. He held office from 1981 to 2003 and later from 2018 to February 2020 for a cumulative total of 24 years, making him the country's longest-serving prime minister. Before becoming premier, he served as Deputy Prime Minister and in other cabinet positions. Wikipedia