The 2018 National Premier Leagues NSW Women's 1 was the fifth edition of the NPL NSW Women's competition to be incorporated under the National Premier Leagues banner.
Football NSW soccer clubs competed in 2018 for the Waratah Cup.
The tournament doubled as the NSW qualifier for the 2018 FFA Cup, with the top five clubs progressing to the Round of 32.
In addition to the three A-League clubs (Central Coast Mariners, Sydney FC and Western Sydney Wanderers), the five qualifiers (APIA Leichhardt Tigers, Bonnyrigg White Eagles, Hakoah Sydney City East, Marconi Stallions and Rockdale City Suns) competed in the final rounds of the 2018 FFA Cup.
The End of Year awards were held at Dolton House and presented on 14 September 2018 for National Premier Leagues NSW Men's and Women's and on 21 September 2018 for National Premier Leagues NSW Men's and Women's 2, as well as Men's 3 and State League competitions.