| Singles | |
|---|---|
| 2016 ITF Women's Circuit UBS Thurgau | |
| Champion |  Kristýna Plíšková |
| Runner-up |  Amra Sadiković |
| Final score | 7–6(7–4), 7–6(7–3) |
Olga Govortsova was the defending champion, but she chose to participate in Acapulco instead.
Kristýna Plíšková won the title, defeating Amra Sadiković in the final, 7–6(7–4), 7–6(7–3).
Carina Witthöft (second round) Kristýna Plíšková (champion)
Tamira Paszek (second round)
Kateryna Kozlova (semifinals) Tereza Smitková (first round)
Amandine Hesse (second round)
Ysaline Bonaventure (second round) Océane Dodin (quarterfinals)| Semifinals | Final | ||||||||||||
 Ekaterina Alexandrova | 7 | 3 | 63 | ||||||||||
| Amra Sadiković | 5 | 6 | 77 | ||||||||||
| Amra Sadiković | 64 | 63 | |||||||||||
| 2 | Kristýna Plíšková | 77 | 77 | ||||||||||
| 4 | Kateryna Kozlova | 2 | 4 | ||||||||||
| 2 | Kristýna Plíšková | 6 | 6 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | C Witthöft | 6 | 77 | ||||||||||||||||||||||||
| N Vaidišová | 1 | 65 | 1 | C Witthöft | 4 | 77 | 65 | ||||||||||||||||||||
| J Malečková | 4 | 4 | E Alexandrova | 6 | 63 | 77 | |||||||||||||||||||||
| E Alexandrova | 6 | 6 | E Alexandrova | 5 | 6 | 6 | |||||||||||||||||||||
| JE |  D Gálfi | 4 | 4 | 8 | O Dodin | 7 | 4 | 3 | |||||||||||||||||||
 B Pera | 6 | 6 | B Pera | 3 | 2 | ||||||||||||||||||||||
| I Ramialison | 4 | 2 | 8 | O Dodin | 6 | 6 | |||||||||||||||||||||
| 8 | O Dodin | 6 | 6 | E Alexandrova | 7 | 3 | 63 | ||||||||||||||||||||
| 3 | T Paszek | 77 | 2 | 6 | A Sadiković | 5 | 6 | 77 | |||||||||||||||||||
| Q |  R Šramková | 62 | 6 | 2 | 3 | T Paszek | 3 | 5 | |||||||||||||||||||
| A Sadiković | 6 | 6 | A Sadiković | 6 | 7 | ||||||||||||||||||||||
| Q | A Zaja | 3 | 4 | A Sadiković | 6 | 3 | 79 | ||||||||||||||||||||
 I Jorović | 6 | 6 | I Jorović | 4 | 6 | 67 | |||||||||||||||||||||
 D Jakupović | 3 | 3 | I Jorović | 6 | 0 | ||||||||||||||||||||||
| Q |  C Ferrando | 3 | 3 | 7 | Y Bonaventure | 3 | 0r | ||||||||||||||||||||
| 7 | Y Bonaventure | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | A Hesse | 6 | 2 | 7 | |||||||||||||||||||||||
| WC |  K von Deichmann | 3 | 6 | 5 | 6 | A Hesse | 2 | 0 | |||||||||||||||||||
| WC | N Stadler | 3 | 0 | M Benoît | 6 | 6 | |||||||||||||||||||||
| M Benoît | 6 | 6 | M Benoît | 2 | 2 | ||||||||||||||||||||||
| PR | C Feuerstein | 6 | 4 | 7 | 4 | K Kozlova | 6 | 6 | |||||||||||||||||||
| K Vaňková | 4 | 6 | 5 | PR | C Feuerstein | 5 | 4 | ||||||||||||||||||||
| V Razzano | 6 | 2 | 1r | 4 | K Kozlova | 7 | 6 | ||||||||||||||||||||
| 4 | K Kozlova | 1 | 6 | 4 | 4 | K Kozlova | 2 | 4 | |||||||||||||||||||
| 5 | T Smitková | 3 | 4 | 2 | Kr Plíšková | 6 | 6 | ||||||||||||||||||||
| Q | G Barbieri | 6 | 6 | Q | G Barbieri | 6 | 6 | ||||||||||||||||||||
| WC | X Knoll | 1 | 4 |  T Lukas | 4 | 2 | |||||||||||||||||||||
| T Lukas | 6 | 6 | Q | G Barbieri | 4 | 2 | |||||||||||||||||||||
| A Lottner | 4 | 2 | 2 | Kr Plíšková | 6 | 6 | |||||||||||||||||||||
| WC | R Masarova | 6 | 6 | WC | R Masarova | 4 | 0 | ||||||||||||||||||||
 L Kerkhove | 3 | 4 | 2 | Kr Plíšková | 6 | 6 | |||||||||||||||||||||
| 2 | Kr Plíšková | 6 | 6 | ||||||||||||||||||||||||
Noppawan Lertcheewakarn was the defending champion, but chose to compete in the ladies' singles competition instead as a wild card and lost to Andrea Hlaváčková in the first round.
Jelena Dokić was the defending champion, but lost in the second round to compatriot Olivia Rogowska.
Dominika Cibulková was the defending champion, but she was defeated in the quarterfinals by Caroline Wozniacki.
Annika Beck was the defending champion, having won the event in 2012, but retired after losing the first set of her semifinal against Kristýna Plíšková.
Ons Jabeur was the defending champion, having won the event in 2013, but chose to compete at the $25,000 ITF tournament in Tunis.
Sandra Klemenschits and Andreja Klepač were the defending champions, but decided not to participate together. Klemenschits teamed up with Mona Barthel, but lost in the quarterfinals to Paula Ormaechea and Dinah Pfizenmaier. Klepač teamed up with María Teresa Torró Flor, but they lost in the final to Karolína Plíšková and Kristýna Plíšková, 6–4, 3–6, [6–10].
Angelique Kerber was the defending champion, but she chose not to participate this year.
Karolína Plíšková and Kristýna Plíšková were the defending champions, but lost in the first round to Annika Beck and Caroline Garcia.
Raluca Olaru and Anna Tatishvili won the title, defeating Beck and Garcia in the final, 6–2, 6–1.
Naomi Broady was the defending champion, but lost in the first round to Miharu Imanishi.
Anastasia Pavlyuchenkova was the defending champion, but lost in the quarterfinals to Dominika Cibulková.
Carla Suárez Navarro was the defending champion, but withdrew before the tournament due to a right shoulder injury.
Lucie Šafářová was the defending champion, but withdrew from her second-round match against Kristýna Plíšková.
Agnieszka Radwańska was the defending champion, but lost in the semifinals to Daria Gavrilova.
Kristýna Plíšková was the defending champion, but lost in the second round to Kurumi Nara.
Petra Kvitová was the defending champion, and successfully defended her title, defeating Magdaléna Rybáriková in the final, 4–6, 6–1, 6–2.
Karolína Plíšková was the defending champion, but lost in the quarterfinals to Aryna Sabalenka.
Carina Witthöft was the defending champion, but lost in the first round to Vera Lapko.
Petra Kvitová was the defending champion, but chose not to participate.
Petra Kvitová was the two-time defending champion, but withdrew with an arm injury before the tournament began.
Petra Kvitová won her second title at the Qatar Open, defeating Garbiñe Muguruza in the singles final, 6–2, 6–1, in a rematch of the 2018 final. Kvitová dropped just one set the entire tournament, to Anett Kontaveit in the quarterfinals.