The members of the First Dáil, known as Teachtaí Dála (TDs), were the 101 Members of Parliament (MPs) returned from constituencies in Ireland at the 1918 United Kingdom general election. In its first general election, Sinn Féin won 73 seats and viewed the result as a mandate for independence; in accordance with its declared policy of abstentionism, its 69 MPs refused to attend the British House of Commons in Westminster, and established a revolutionary parliament known as Dáil Éireann. The other Irish MPs — 26 unionists and six from the Irish Parliamentary Party (IPP) — sat at Westminster and for the most part ignored the invitation to attend the Dáil. Thomas Harbison, IPP MP for North East Tyrone, did acknowledge the invitation, but "stated he should decline for obvious reasons". The Dáil met for the first time on 21 January 1919 in Mansion House in Dublin. Only 27 members attended; most of the other Sinn Féin TDs were imprisoned by the British authorities, or in hiding under threat of arrest. All 101 MPs were considered TDs, and their names were called out on the roll of membership, though there was some laughter when Irish Unionist Alliance leader Edward Carson was described as as láthair ("absent"). The database of members of the Oireachtas includes for the First Dáil only those elected for Sinn Féin.

Augustine Mary Moore Stack was an Irish republican and politician who served as Minister for Home Affairs from 1921 to 1922. He was a Teachta Dála (TD) from 1918 to 1927.