Mui'zzuddeen bin Mahyuddin (born 29 April 1988), simply known as Muiz Mahyuddin, is a Malaysian politician and automotive engineer who has served as Member of the Selangor State Legislative Assembly (MLA) for Hulu Bernam since August 2023.
He is a member and Division Committee Member of Hulu Selangor of the Malaysian Islamic Party (PAS), a component party of the Perikatan Nasional (PN) and formerly Gagasan Sejahtera (GS) coalitions.
He served as the Division Secretary of PAS of Hulu Selangor from 2015 to 2021.
[1] In the 2023 Selangor state election, Mui'zzuddeen made his electoral debut after being nominated by PN to contest the Hulu Bernam state seat.
Mui'zzuddeen won the seat and was elected to the Selangor State Legislative Assembly as the Hulu Bernam MLA for the first term after narrowly defeating Mohd Amran Mohd Sakir of Pakatan Harapan (PH) by a majority of only 669 votes.