Alison Riske defeated Kiki Bertens in the final, 0–6, 7–6(7–3), 7–5, to win the women's singles title at the 2019 Rosmalen Grass Court Championships.

Riske saved five championship points en route to winning her second career WTA Tour singles title, her first in five years.

[1] Aleksandra Krunić was the defending champion,[2] but she lost to Kirsten Flipkens in the first round in a rematch of the previous year's final.

[3]