Datuk Seri Saifuddin Nasution bin Ismail (Jawi: سيف الدين ناسوتيون بن اسماعيل; born 7 December 1963) is a Malaysian politician who has served as the Minister of Home Affairs in the Pakatan Harapan (PH) administration under Prime Minister Anwar Ibrahim as well as Senator since December 2022. He also served as the Minister of Domestic Trade and Consumer Affairs in the PH administration under former Prime Minister Mahathir Mohamad from July 2018 to the collapse of the PH administration in February 2020. He served as the Member of Parliament (MP) for Kulim-Bandar Baharu from May 2018 to November 2022 and for Machang from March 2008 to May 2013 as well as Member of the Penang State Legislative Assembly (MLA) for Pantai Jerejak since May 2018 and MLA of Kedah for Lunas from November 2000 to Marc