The 1988 Railway Cup Hurling Championship was the 62nd staging of the Railway Cup since its establishment by the Gaelic Athletic Association in 1927. The cup began on 15 October 1988 and ended on 16 October 1988.
Connacht were the defending champions.
On 16 October 1988, Leinster won the cup after a 2-14 to 1-12 defeat of Connacht in the final at Casement Park. This was their 19th Railway Cup title overall and their first title since 1979.