Jack Macgougan (21 August 1913 – 12 December 1998) was a trade unionist and socialist activist in Ireland. Born in Belfast to a Protestant family, Macgougan became an active trade unionist at an early age. In 1935 he was elected Secretary of the Socialist Party of Northern Ireland, a Northern Ireland Labour Party-affiliate split from the Independent Labour Party (NILP). MacGougan retired to Milton Keynes in England where he died on 14 December 1998.