John O'Grady (1940 – 1 July 2023) was an Irish hurling referee.
He later played with the Mungret/St Paul's club and was part of the team that won the Limerick JHC title after a defeat of Bruff in 1969.
His first refereeing engagement was a tournament game between Patrickswell and Ballybrown.
O'Grady was later added to the provincial and national panel of referees.
He famously sent off Cork's Denis Coughlan in the 1972 Munster final, however, his decision was later rescinded with O'Grady writing him an apology.