Pádraic Ó Máille, Irish politician, is born in Kilmilkin, in the Maam Valley (Irish: Gleann an Mháma) of County Galway on February 23, 1878. He is a founder member of Sinn Féin and of the Conradh na Gaeilge in Galway. He is a member of the Irish Volunteers from 1917 to 1921.

Before entering politics Ó Máille is a farmer. He is elected as a Sinn Féin Member of Parliament (MP) for Galway Connemara at the 1918 Irish general election.

In January 1919, Sinn Féin MPs who had been elected in the Westminster elections of 1918 refuse to recognise the Parliament of the United Kingdom and instead assemble at the Mansion House in Dublin as a revolutionary parliament called Dáil Éireann. Ó Máille is re-elected as a Sinn Féin Teachta Dála (TD) for the Galway constituency at the 1921 Irish elections.

Ó Máille supports the Anglo-Irish Treaty and votes in favour of it. He is re-elected as a pro-Treaty Sinn Féin TD for Galway at the 1922 Irish general election, and is elected as a Cumann na nGaedheal TD for Galway at the 1923 Irish general election. In the subsequent Irish Civil War, he is targeted for assassination by anti-Treaty forces and is shot and badly wounded in Dublin in December 1922.

Ó Máille is critical of the proposed Irish Boundary Commission and resigns from Cumann na nGaedheal and founds a new political party called Clann Éireann in 1926.

Ó Máille loses his seat at the June 1927 Irish general election and is unsuccessful at the September 1927 Irish general election. He later joins Fianna Fáil, the party which emerges from the anti-Treaty side in the civil war, and contests the 1932 Irish general election for that party in the Dublin County constituency but is not elected.

On each of these occasions Ó Máille is subjected to a smear campaign by his former party colleagues who his pro-Treaty stance during the civil war against him. It is alleged that he had personally selected his fellow county man Liam Mellows for execution. These smears persist despite denials from the Mellows family and from Ó Máille himself. In fact, Mellows is executed in reprisal for the attack on Ó Máille and Sean Hales on December 8, 1922.

Ó Máille serves as a Fianna Fáil Senator in Seanad Éireann from 1934 to 1936. He is re-elected to the new Seanad in 1938 on the Agricultural Panel. From 1939 until his death in 1946 he is re-appointed to the Seanad as a nominee of the Taoiseach Éamon de Valera. He is Leas-Chathaoirleach (Deputy chairman) of the Seanad from May to November 1938.

Ó Máille dies on January 19, 1946. Accorded a guard of honour by the Dublin brigade, he is buried at Glencullen Cemetery, County Dublin.