Tan Sri Tengku Razaleigh bin Tengku Mohd Hamzah (Jawi: تڠکو غزالي بن تڠکو محمد حمزة; born 13 April 1937) is a Malaysian politician who served as the Member of Parliament (MP) for Gua Musang from August 1986 to November 2022 and for Ulu Kelantan from August 1974 to August 1986. He is the longest-serving MP by serving from 1974 to 2022 for 48 years. He is sometimes referred to as the Father of Malaysian Economic Development for playing a pivotal role in establishing and implementing key foundations and policies in Malaysian economy. A descendant of Malay royalty, he is a great-uncle of the current Sultan of Kelantan, Sultan Muhammad V.