Murtagh Morgan (fl. 1925–1981) was a trade unionist and Irish republican politician. Morgan lived in Belfast and had a Roman Catholic background. In the 1920s, he became a republican labour activist in the Northern Ireland Labour Party (NILP), claiming to act in the spirit of James Connolly. By 1925, he had become the President of the Belfast section of the Irish Transport and General Workers' Union. By the 1930s, he was Chairman of the union, and was active on Belfast Trades Council. He supported the Republican Congress initiative, started in 1934. During this period, he was close to the Socialist Party of Northern Ireland faction of the NILP.