2018 Swiss Open – Women's Singles Qualifying

Players who neither didn't receive main draw wildcards nor have high rankings for the main draw participate in a qualifying tournament prior to the Swiss Open.

Seeds
Mona Barthel entered the Swiss Open qualifying tournament late. Because of that, everyone on the entry list ranked lower than Barthel moved up a position.
 * 1) 🇷🇺 Evgeniya Rodina (Second round)
 * 2) 🇩🇪 Tatjana Maria (First round)
 * 3) 🇪🇸 Lara Arruabarrena (Second round)
 * 4) Stefanie Vögele (Second round)
 * 5) 🇷🇴 Sorana Cîrstea (First round)
 * 6) 🇪🇸 Sara Sorribes Tormo (Second round)
 * 7) 🇺🇸 Madison Brengle (Second round)
 * 8) 🇰🇿 Zarina Diyas
 * 9) 🇷🇺 Margarita Gasparyan
 * 10) 🇬🇧 Heather Watson (Second round)
 * 11) 🇨🇿 Kristýna Plíšková
 * 12) 🇷🇺 Anna Blinkova
 * 13) 🇺🇦 Kateryna Kozlova
 * 14) 🇬🇧 Katie Boutler
 * 15) 🇺🇸 Coco Vandeweghe
 * 16) 🇺🇸 Sachia Vickery
 * 17) 🇱🇺 Mandy Minella
 * 18) Viktorija Golubic (First round)
 * 19) 🇺🇦 Anhelina Kalinina
 * 20) 🇷🇸 Olga Danilović (Second round)
 * 21) 🇷🇺 Vera Zvonareva
 * 22) 🇺🇸 Jessica Pegula
 * 23) 🇨🇴 Mariana Duque Mariño (Second round)
 * 24) 🇯🇵 Nao Hibino (First round)
 * 25) 🇭🇺 Fanny Stollár
 * 26) 🇷🇺 Sofya Zhuk
 * 27) 🇩🇪 Tamara Korpatsch
 * 28) Arantxa Rus
 * 29) 🇺🇦 Marta Kostyuk (Second round)
 * 30) 🇨🇳 Zhu Lin (First round)
 * 31) 🇧🇪 Yanina Wickmayer (Second round)
 * 32) 🇺🇸 Nicole Gibbs (First round)

Qualifiers

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