The 1958 Cork Junior Hurling Championship was the 61st staging of the Cork Junior Hurling Championship since its establishment by the Cork County Board in 1895.
The final, a replay, was played on 7 December 1958 at the Athletic Grounds in Cork, between Ballymartle and Grenagh, in what was their first ever meeting in the final. Ballymartle won the match by 8-10 to 2-01 to claim a second championship title overall and a first championship title in six years.