Irdinansyah Tarmizi (13 March 1957 – 19 September 2020) was an Indonesian politician. He was born in Bukittinggi, Indonesia. He was a member of the Golkar Party. Between 2014 to 2015, he was Deputy Regent of the Tanah Datar Regency. In 2016, he became the official Regent of Tanah Datar. 