Tengku Maimun Tuan Mat

Tengku Maimun Tuan Mat
تڠكو ميمون توان مت
Tengku Maimun in 2019
Chief Justice of Malaysia
In office
2 May 2019 – 2 July 2025
Nominated byMahathir Mohamad
Appointed byAbdullah
MonarchsAbdullah
(2019–2024)
Ibrahim Iskandar
(2024–2025)
Prime MinisterMahathir Mohamad
(2019–2020)
Muhyiddin Yassin
(2020–2021)
Ismail Sabri Yaakob
(2021–2022)
Anwar Ibrahim
(2022–2025)
Preceded byRichard Malanjum
Succeeded byWan Ahmad Farid Wan Salleh
Personal details
Born (1959-07-02) 2 July 1959
Kota Bharu, Kelantan, Federation of Malaya
(now Malaysia)
SpouseZamani Ibrahim
Children4
Alma materUniversity of Malaya (LLB)
OccupationLawyer
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Tengku Maimun binti Tuan Mat (born 2 July 1959) is a Malaysian lawyer who served as the Chief Justice of Malaysia from 2019 until her retirement in 2025. She was the second-longest serving Chief Justice of Malaysia and the first woman to be appointed to the office.

During her tenure, Tengku Maimun presided over several landmark cases, most notably the conviction of former Prime Minister Najib Razak in the 1Malaysia Development Berhad scandal. Her leadership on the bench drew both praise and criticism, particularly for rulings on religious and constitutional issues. Demonstrating a strong sense of judicial independence, she was once described as "the only man in the Federal Court" after issuing minority judgments in four major constitutional cases.