2018 Kremlin Cup
The 2018 Kremlin Cup was a tennis tournament played on indoor hard courts. It was the 29th edition of the Kremlin Cup for the men and the 23rd edition for the women. The tournament was part of the ATP World Tour 250 Series of the 2018 ATP World Tour, and of the Premier Series of the 2018 WTA Tour. It was the last tournament for now to be held at the Olympic Stadium in Moscow, Russia, from 15 October through 21 October 2018.
ATP singles main-draw entrants
Seeds
Other entrants
The following players received wildcards into the singles main draw:The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
Withdrawals
;Before the tournament- Jérémy Chardy → replaced by Ričardas Berankis
- Pablo Cuevas → replaced by Laslo Đere
- João Sousa → replaced by Evgeny Donskoy
Retirements
ATP doubles main-draw entrants
Seeds
Other entrants
The following pairs received wildcards into the doubles main draw:Withdrawals
;During the tournamentWTA singles main-draw entrants
Seeds
- Rankings are as of October 8, 2018
Other entrants
The following players received wildcards into the singles main draw:The following players received entry from the qualifying draw:
The following players received entry as lucky losers:
Withdrawals
;Before the tournament- Dominika Cibulková → replaced by Ajla Tomljanović
- Danielle Collins → replaced by Ekaterina Makarova
- Simona Halep → replaced by Valentini Grammatikopoulou
- Kaia Kanepi → replaced by Yulia Putintseva
- Aryna Sabalenka → replaced by Vitalia Diatchenko
- Barbora Strýcová → replaced by Irina-Camelia Begu
WTA doubles main-draw entrants
Seeds
- 1 Rankings are as of October 8, 2018
Other entrants
The following pair received a wildcard into the doubles main draw:The following pair received entry as alternates: