Louis Alphonse Koyagialo, Congolese politician, Prime Minister of the Democratic Republic of the Congo (b. 1947)

Louis Alphonse Daniel Koyagialo Ngbase te Gerengbo (23 March 1947 – 14 December 2014) was a Congolese politician. He was appointed Deputy Prime Minister of the Democratic Republic of the Congo with responsibility for the Ministry of Postal Services, Telephones, and Telecommunications in the second cabinet of Prime Minister Adolphe Muzito. Following the resignation of Prime Minister Muzito, Koyagialo was Acting Prime Minister from 6 March to 18 April 2012, prior to the appointment of Augustin Matata Ponyo.