The 2019 Engie Open Nantes Atlantique was a professional tennis tournament played on indoor hard courts. It was the sixteenth edition of the tournament which was part of the 2019 ITF Women's World Tennis Tour. It took place in Nantes, France between 28 October and 3 November 2019.
Singles main-draw entrants
Seeds
1 Rankings are as of 21 October 2019.
Other entrants
The following players received wildcards into the singles main draw: Sara Cakarevic Irina Ramialison Alice Tubello
The following player received entry using a protected ranking: Océane Dodin
The following players received entry from the qualifying draw: Akgul Amanmuradova Mathilde Armitano Lucía Cortez Llorca Salma Djoubri Théo Gravouil Verena Meliss Mallaurie Noël Julia Terziyska
The following player received entry as a lucky loser: Elixane Lechemia
Champions
Singles
Cristina Bucșa def. Tamara Korpatsch, 6–2, 6–7(11–13), 7–6(8–6)
Doubles
Akgul Amanmuradova / Ekaterine Gorgodze def. Vivian Heisen / Yana Sizikova, 7–6(7–2), 6–3