The 2017–18 Northwestern State Lady Demons basketball team represented Northwestern State University during the 2017–18 NCAA Division I women's basketball season. The Demons, led by second year head coach Jordan Dupuy, played their home games at Prather Coliseum and were members of the Southland Conference. They finished the season 7–22, 2–16 in Southland play to finish in twelfth place. They failed to qualify for the Southland women's tournament.