2018 Reinert Open

The 2018 Reinert Open was a professional tennis tournament played on outdoor clay courts. It was the eleventh edition of the tournament and was part of the 2018 ITF Women's Circuit. It took place in Versmold, Germany, on 9–15 July 2018.

Seeds

 * 1 Rankings as of 2 July 2018.

Other entrants
The following players received a wildcard into the singles main draw:
 * 🇩🇪 Katharina Gerlach
 * 🇩🇪 Lena Rüffer
 * 🇩🇪 Laura Siegemund
 * 🇩🇪 Julyette Steur

The following players received entry from the qualifying draw:
 * 🇮🇹 Angelica Moratelli
 * 🇩🇪 Jule Niemeier
 * 🇹🇷 Pemra Özgen
 * 🇵🇱 Katarzyna Piter

Singles

 * 🇷🇸 Olga Danilović def. 🇩🇪 Laura Siegemund, 5–7, 6–1, 6–3

Doubles

 * 🇹🇷 Pemra Özgen / Despina Papamichail def. 🇷🇸 Olga Danilović / 🇷🇸 Nina Stojanović, 1–6, 6–2, [10–4]