The 1990 All-Ireland Junior Hurling Championship was the 60th staging of the All-Ireland Junior Championship, the Gaelic Athletic Association's second tier Gaelic football championship.
Cork entered the championship as the defending champions.
The All-Ireland final was played on 9 September 1990 at Páirc UàChaoimh in Cork, between Cork and Warwickshire, in what was their sixth meeting in the final and a second meeting in succession. Cork won the match by 3-16 to 0-08 to claim their ninth championship title overall and a second consecutive title.