Ysaline Bonaventure and Rebecca Peterson were the defending champions, but Bonaventure chose not to participate this year. Peterson played alongside Julia Glushko but lost in the first round to Paula Cristina Gonçalves and Sanaz Marand.
Verónica Cepede Royg and María Irigoyen won the title, defeating Tara Moore and Conny Perrin in the final, 6–1, 7–6(7–5).
Jocelyn Rae and Anna Smith were the defending champions and successfully defended their title, defeating Czech-duo Lenka Kunčíková and Karolína Stuchlá in the final, 6–4, 6–1.
Françoise Abanda and Maria Sanchez were the defending champions, but both players chose to compete with different partners. Abanda partnered Sachia Vickery, but withdrew before the first round, whilst Sanchez partnered Elise Mertens, losing in the first round.
Venus Williams was the defending champion, but chose to compete in St. Petersburg instead.
Irina Falconi was the defending champion, but lost in the first round to Dalila Jakupović.
Çağla Büyükakçay was the defending champion, but lost in the quarterfinals to Elise Mertens.
Michaëlla Krajicek and Maria Sanchez were the defending champions, but Krajicek chose not to participate. Sanchez chose to partner Jovana Jakšić, but they lost in the first round to Sabrina Santamaria and Carol Zhao.
Elena Bogdan and Mihaela Buzărnescu were the defending champions, but decided not to participate this year.
Gabriela Dabrowski and Michaëlla Krajicek were the defending champions, but decided not to participate this year.
The singles competition of the 2018 Ladies Championship Gstaad tennis tournament was held in Gstaad, Switzerland from 16-22 July 2018. Kiki Bertens was the defending champion, but withdrew before the tournament began.
Gréta Arn was the defending champion, but chose not to participate.
Alexa Guarachi and Erin Routliffe were the defending champions, but both players chose not to participate.
Belinda Bencic was the champion the last time the event was held in 2017, but chose to compete in St. Petersburg instead.
Lesia Tsurenko was the two-time defending champion, but chose not to defend her title.
Kiki Bertens was the defending champion, but lost in the third round to Maria Sakkari.
Tara Moore and Conny Perrin were the defending champions, but Perrin chose not to participate. Moore partnered Emina Bektas, but lost to Samantha Murray and Bibiane Schoofs in the semifinals.
This was the first edition of the tournament.
Olga Govortsova and Mandy Minella were the defending champions but chose not to participate.
Emina Bektas and Tara Moore were the defending champions but chose not to participate.
Emina Bektas and Tara Moore were the defending champions but were defeated by Sophie Chang and Angela Kulikov in the final, 6–3, 6–7(2–7), [10–7].
Tara Moore 
Conny Perrin 
Sharon Fichman 
Maria Sanchez 
