Hadiach Raion (Ukrainian: Гадяцький район; translit.

The raion's administrative center was the city of Hadiach, which was incorporated separately as a city of oblast significance and did not belong to the raion.

The raion was abolished on 18 July 2020 as part of the administrative reform of Ukraine, which reduced the number of raions of Poltava Oblast to four.

)[3] Important rivers within the Hadyatskyi Raion included the Psel and the Khorol.

At the time of disestablishment, the raion consisted of five hromadas:[4]