Women's Singles Entry List at the Olympics - I have 63 names so there must be space for one more:
Australia: Samantha Stosur, Daria Gavrilova
Belgium: Yanina Wickmayer, Kirsten Flipkens
Brazil: Teliana Pereira (FP)
Bulgaria: Tsvetana Pironkova
Canada: Eugenie Bouchard
China, P.R.: Peng Shuai, Zhang Shuai, Wang Qiang
Chinese Taipei: Hsieh Su-Wei
Colombia: Mariana Duque-Mariño (FP)
Croatia: Ana Konjuh
Czech Republic: Petra Kvitova, Lucie Safarova, Barbora Strycova
Denmark: Caroline Wozniacki
France: Kristina Mladenovic, Caroline Garcia, Alizé Cornet
Germany: Angelique Kerber, Andrea Petkovic, Annika Beck, Laura Siegemund
Great Britain: Johanna Konta, Heather Watson
Hungary: Timea Babos
Italy: Roberta Vinci, Sara Errani, Karin Knapp
Japan: Misaki Doi, Nao Hibino
Kazakhstan: Galina Voskoboeva
Latvia: Jelena Ostapenko
Liechtenstein: Stephanie Vogt (TRI)
Montenegro: Danka Kovinic
Netherlands: Kiki Bertens
Paraguay: Veronica Cepede Royg (TRI)
Poland: Agnieszka Radwanska, Magda Linette (FP)
Puerto Rico: Monica Puig
Romania: Irina-Camelia Begu, Monica Niculescu
Russia: Svetlana Kuznetsova, Anastasia Pavlyuchenkova, Daria Kasatkina, Ekaterina Makarova
Serbia: Jelena Jankovic, Ana Ivanovic
Slovakia: Anna Karolina Schmiedlova
Slovenia: Polona Hercog (FP)
Spain: Garbiñe Muguruza, Carla Suárez Navarro
Sweden: Johanna Larsson
Switzerland: Timea Bacsinszky
Tunisia: Ons Jabeur (FP)
Turkey: Cagla Buyukakcay (FP)
Ukraine: Elina Svitolina, Lesia Tsurenko
USA: Serena Williams, Venus Williams, Madison Keys, Sloane Stephens