1975 establishments in Ethiopia

The Tigray People's Liberation Front (TPLF; Tigrinya: ህዝባዊ ወያነ ሓርነት ትግራይ, Həzbawi Wäyyanä Ḥarənnät Təgray, 'Popular Struggle for the Freedom of Tigray'), also known as the Tigrayan People's Liberation Front, is a left-wing ethnic nationalist, paramilitary group, and the former ruling party of Ethiopia. It was classified as a terrorist organization by the Ethiopian government during the Tigray War until its removal from the list in 2023. In older and less formal texts and speech it is known as Woyane (Tigrinya: ወያነ, 'Revolutionary') or Weyané (Amharic: ወያኔ).

The Ethiopian Islamic Affairs Supreme Council (Amharic: የኢትዮጵያ እስልምና ጉዳዮች ጠቅላይ ምክር ቤት; EIASC) is the central governing body of Islam representing Ethiopian Muslims living in both domestic and foreign countries. It was established following the Ethiopian Revolution in 1975 with intention to unify and serving the Muslim community. In 2012, the House of Peoples' Representatives approved EIASC with Proclamation No. 1207/2020, granting legal responsibility and therefore representing Muslims both domestically and internationally. The current president of EIASC is Doctor Sheikh Haji Ibrahim Tufa since 2022.

Western Somali Democratic Party (WSDP; also known as Somali Galbed) is a political party in Ethiopia. It emerged from the Western Somali Liberation Front in 1975. The former President of the Somali Region, Hassan Jire Kalinle, has been the party chairman since 1994; the vice chairman of the party is Joseph Nur.

The Labour League (Amharic: የወዛደር ሊግ), generally known by its Amharic name Waz (Amharic: ወዝ) or the hybrid name Waz League (Amharic: ወዝ ሊግ), was a Marxist organization in Ethiopia active between 1975 and 1979, allied with the Derg military junta. Waz League was founded by Dr. Sennai Likkay, a veteran leader of the student movement (graduate in chemical engineering in the United States and former president of the Ethiopian Students Union of North America).

Echat (Amharic: ኢጭአት, acronym for የኢትዮጵያ ጭቁኖች አብዮታዊ ትግል, 'Ethiopian Oppressed People's Revolutionary Struggle') was a communist organization in Ethiopia. The organization was active between 1975 and 1978. The organization emerged from a split away from the All-Ethiopian Socialist Movement (MEISON). Echat was initially allied with the Derg military junta, but later turned against it.