Datuk Seri Salahuddin bin Ayub (Jawi: صلاح الدين بن أيوب 1 December 1961 – 23 July 2023) was a Malaysian politician who has served as the Minister of Domestic Trade and Costs of Living in the Pakatan Harapan (PH) administration under Prime Minister Anwar Ibrahim since December 2022 and Minister of Agriculture and Agro-based Industry in the PH administration under former Prime Minister Mahathir Mohamad from May 2018 to his resignation and the collapse of the PH administration in February 2020. He has also served as the Member of Parliament (MP) for Pulai since May 2018 and for Kubang Kerian from March 2004 to May 2013 as well as Member of the Johor State Legislative Assembly (MLA) for Simpang Jeram since May 2018. He is a member of the National Trust Party (AMANAH), a component party of PH coalition. He has served as the 1st and founding Deputy President of AMANAH since September 2015 and State Chairman of PH of Johor since September 2022. He was previously a member, Youth Chief and Vice-President of the Malaysian Islamic Party (PAS), a former component party of the former Pakatan Rakyat (PR) and Barisan Alternatif (BA) opposition coalitions. But he together with a few other progressive leaders led by Mohamad referred as G18 were ousted during the 2015 PAS Muktamar which had launched Gerakan Harapan Baru (GHB) and founded AMANAH.