Joseph John "Joe" O'Toole (born 20 July 1947) is a former Irish independent politician, who was a member of Seanad Éireann from 1987 to 2011.
He was born and brought up in Dingle, County Kerry, O'Toole was a teacher for ten years and then a school principal in County Dublin. From 1990–2001, he was appointed General Secretary of the Irish National Teachers' Organisation (INTO), and from 2001–2003, he was President of the Irish Congress of Trade Unions (ICTU). He lives in Kilsallaghan, County Dublin.
He was first elected to the 18th Seanad in 1987 for the National University of Ireland (NUI) constituency, he has been re-elected by the same constituency at each subsequent election.
In the Seanad, he was a member of the Parliamentary Joint Finance Committee. His autobiography "Looking under stones: roots, family and a Dingle childhood", was published in 2003.
He retired from politics at the 2011 Seanad election.