The 2018 National Hurling League was the 87th season of the National Hurling League for county teams. Wexford finished top of Division 1B in 2017 and were promoted to Division 1A for 2018. Galway finished second in Division 1B in 2017 and so missed out on promotion, even though they subsequently won the Division 1 league final. Cavan re-entered the National Hurling League in Division 3B, having previously withdrawn. Lancashire also entered in Division 3B for the first time.