 Loeng Nok Tha was established as a minor district ("king amphoe"), under jurisdiction of Mueang Amnat Charoen District in Ubon Ratchathani Province on 1 September 1937.It then consisted of the three "tambons" Kut Chiang Mi, Bung Kha, and Som Pho.On 1 November 1947, Loeng Nok Tha was elevated to district ("amphoe") status in Ubon Ratchathani Province.