Eddie McAteer (1914 – 28 March 1986) was an Irish nationalist politician in Northern Ireland.
Born in Coatbridge, Scotland, McAteer's family moved to Derry in Northern Ireland while he was young. In 1930 he joined the Inland Revenue, where he worked until 1944. He then became an accountant and more actively involved in politics. While his brother, Hugh, became a prominent Irish republican, involved in the Irish Republican Army (IRA) and Sinn Féin, Eddie chose nationalist politics. He was elected as the Nationalist Party (Northern Ireland) Member of Parliament for Mid Londonderry in the Northern Ireland general election, 1945. He was a founder member of the Anti-Partition League of Ireland, and became its vice chairman in 1947, then its chairman in 1953.
In 1952, McAteer was elected to Londonderry City Council, and the following year he switched to represent Foyle in the Northern Ireland House of Commons. He left the City Council in 1958, and became the Deputy Leader of the Nationalist Party at Stormont. He became prominent in the campaign calling for the establishment of a university in Derry.