The Ethiopian Democratic Party (Amharic: ከኢትዮጵያዊያን ዴሞክራሲያዊ ፓርቲ) is a political party in Ethiopia. The result of no less than five mergers of liberal and conservative liberal opposition parties, it can trace its roots to the Ethiopian Democratic Union, which mounted armed monarchist resistance to the Derg in the immediate aftermath of the overthrow of Haile Selassie I. In the legislative elections held on 15 May 2005, the United Ethiopian Democratic Party - Medhin, as it was then known, was part of the United Ethiopian Democratic Forces, that won 52 out of 527 seats in the Council of People's Representatives. It won no seats in the 2010 elections
In October 1999 the Ethiopian Democratic Party (EDP) was registered following "40 weeks of political discussion". In mid-2000, the party held its first congress, electing Admassu Gebeyehu, Hailu Araya and Lidetu Ayalew as Chairman, Vice Chairman, and General Secretary, respectively.
In September 2003, the EDP merged with the Ethiopian Democratic Union, becoming the United Ethiopian Democratic Party. Mengesha Seyoum became the party's honorary chairman, but played little role in the party administration, living in exile, and the post was quietly abolished.
In September 2004 it merged with the Ethiopian Medhin (Salvation) Democratic Party founded by former Foreign Minister Goshu Wolde and became the United Ethiopian Democratic Party - Medhin. In early 2005 it absorbed the short-lived Ethiopian Democratic Action Group of Sophia Yilma, daughter of former Minister of Finance Yilma Deressa.In August 2005 Lidetu Ayalew was elected Party President, Sophia Yilma Vice President, and Mushe Semu Secretary General.