Jalaluddin bin Alias (Jawi: جلال الدين بن ألياس) is a Malaysian politician who has served as Senior Member of the Negeri Sembilan State Executive Council (EXCO) in the Pakatan Harapan (PH) state administration under Menteri Besar Aminuddin Harun since August 2023, Member of Parliament (MP) for Jelebu since May 2018 and Member of the Negeri Sembilan State Legislative Assembly (MLA) for Pertang from May 2013 to May 2018 and again since August 2023.
He served as the Deputy Minister of Federal Territories in the Barisan Nasional (BN) administration under former Prime Minister Ismail Sabri Yaakob and former Minister Shahidan Kassim from August 2021 to the collapse of the BN administration in November 2022, Chairman of the UDA Holdings Berhad from May 2020 to November 2021, Member of the Negeri Sembilan State EXCO in the BN state administration under former Menteri Besar Mohamad Hasan from May 2013 to the collapse of the BN state administration in May 2018 and MLA for Kelawang from March 2004 to March 2008.
He is a member of the United Malays National Organisation (UMNO), a component party of the BN coalition.
After election, he was appointed as state executive councillor for Urban Wellbeing, Housing and Local Government under leadership of Menteri Besar, Mohamad Hasan.
He succeeded Zainudin Ismail, who died due to complications from a brain tumour he suffered previous year.