Patrick O'Keeffe (Irish: Pádraig Ó Caoimh; 3 July 1881 – 21 September 1973) was an Irish politician, revolutionary and public servant. O'Keeffe was born in the townland of Nohovaldaly, Cullen, County Cork, the son of Daniel John O'Keeffe and Bridget Sullivan. He joined the Sinn Féin party led by Arthur Griffith, where he was at one time honorary secretary. He fought in the Easter Rising in 1916 and was subsequently interned at Frongoch internment camp. He was elected as a Sinn Féin MP for the Cork North constituency at the 1918 general election. As such, he was a member of the First Dáil, though he could not attend the first meeting as he was in prison.