The 1999 National Camogie League is a competition in the women's team field sport of camogie was won for the fifth time succession by Cork, who defeated Tipperary by an astonishing 36 points in the final, played at Thurles. The one-sided result was, surprisingly, reversed by Tipperary in the championship when they beat Kilkenny in the 1999 All-Ireland championship final replay four months later, Kilkenny having beaten Cork in a replayed semi-final. It was the first National League to be played since the rules of camogie changed the team size to 15-a-side, although the 1993 and 1994 League had been played on an experimental basis with 15 players a side.