Ahmad Tajuddin Akhazul Khairi Waddien (22 August 1912 - 4 June 1950) was the 27th Sultan of Brunei from 1924 until his death in 1950. He was succeeded by his younger brother Sultan Omar Ali Saifuddien III.

Ahmad Tajuddin has been disregarded by Malcolm MacDonald and frequently ignored and mishandled by others like his political advisor Gerard MacBryan. He