Almu'tasimu Billahi Muhibbuddin Tuanku Alhaj Abdul Halim Mu'adzam Shah Ibni Almarhum Sultan Badlishah, (28 November 1927 – 11 September 2017) was the 14th Yang di-Pertuan Agong (supreme head of state) of Malaysia. He was the 27th Sultan of Kedah. He retired as Yang di-Pertuan Agong in 12 December 2016.