The 2018 Moscow River Cup was a women's tennis tournament played on outdoor clay courts. It was the first edition of the event and part of the WTA International tournaments of the 2018 WTA Tour. It took place at the National Tennis Center in Moscow, Russia from 23 through 29 July 2018.
Singles main-draw entrants
Seeds
1 Rankings as of July 16, 2018.
Other entrants
The following players received wildcards into the singles main draw: Antonia Lottner Anastasia Potapova
The following players received entry using a protected ranking into the singles main draw: Laura Siegemund
The following players received entry from the qualifying draw: Paula Badosa Gibert Deborah Chiesa Varvara Flink Valentini Grammatikopoulou Valentyna Ivakhnenko Martina Trevisan
The following players received entry as lucky losers: Irina Bara Olga Danilović
Withdrawals
Before the tournament
Irina-Camelia Begu → replaced by Irina Bara
Mihaela Buzărnescu → replaced by Viktoriya Tomova
Sara Errani → replaced by Anna Karolína Schmiedlová
Polona Hercog → replaced by Vera Zvonareva
Petra Martić → replaced by Olga Danilović
Yulia Putintseva → replaced by Tamara Zidanšek
Elena Vesnina → replaced by Ekaterina Alexandrova
During the tournament
Anastasija Sevastova
Retirements
Tamara Zidanšek
Doubles main-draw entrants
Seeds
1 Rankings as of July 16, 2018.
Other entrants
The following pairs received wildcards into the doubles main draw: Sofya Lansere / Elena Rybakina Polina Monova / Maryna Zanevska
Champions
Singles
Olga Danilović def. Anastasia Potapova, 7–5, 6–7(1–7), 6–4
Doubles
Anastasia Potapova / Vera Zvonareva def. Alexandra Panova / Galina Voskoboeva, 6–0, 6–3