John Christopher O'Mahony (8 June 1953 – 6 July 2024) was an Irish Fine Gael politician and football manager who served as a Senator from 2016 to 2020, after being nominated by the Taoiseach.

[2][3] He taught for many years at St Nathy's College, Ballaghaderreen, County Roscommon.

O'Mahony died in Galway on 6 July 2024, after being diagnosed with cancer in later years.

[6] In 2009, he was named at 114 in the Sunday Tribune's list of the 125 Most Influential People In GAA History.

[8] He was the Fine Gael Seanad spokesperson on Transport, Tourism and Sport.