North Londonderry by election, 1919

The North Londonderry by-election of 1919 was held on 4 March 1919. The by-election was held due to the resignation of the incumbent Irish Unionist MP, Hugh Alfred Anderson. It was won by the Irish Unionist candidate Hugh Thom Barrie. Barrie's Sinn Féin opponent, Patrick McGilligan, would later become Irish Minister for External Affairs.