| Singles | |
|---|---|
| 2016 Geneva Open | |
| Champion |  Stan Wawrinka |
| Runner-up |  Marin Čilić |
| Final score | 6–4, 7–6(13–11) |
| Draw | 28 |
| Seeds | 8 |
Thomaz Bellucci was the defending champion, but lost in the second round to Federico Delbonis.
Stan Wawrinka won the title, defeating Marin Čilić in the final, 6–4, 7–6(13–11).
The top four seeds receive a bye into the second round.
Stan Wawrinka (champion)
David Ferrer (semifinals) Marin Čilić (final)
John Isner (second round)
Philipp Kohlschreiber (withdrew)
Federico Delbonis (quarterfinals) Steve Johnson (second round) Sam Querrey (first round)| Semifinals | Final | ||||||||||||
| 1 | Stan Wawrinka | 6 | 4 | 6 | |||||||||
 Lukáš Rosol | 2 | 6 | 3 | ||||||||||
| 1 | Stan Wawrinka | 6 | 713 | ||||||||||
| 3/WC | Marin Čilić | 4 | 611 | ||||||||||
| 3/WC | Marin Čilić | 7 | 7 | ||||||||||
| 2/WC | David Ferrer | 5 | 5 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | S Wawrinka | 6 | 6 | ||||||||||||||||||||||||
| A Ramos Viñolas | 6 | 2 | 6 | A Ramos Viñolas | 1 | 1 | |||||||||||||||||||||
 T Gabashvili | 4 | 6 | 3 | 1 | S Wawrinka | 6 | 6 | ||||||||||||||||||||
| Q |  C Garín | 2 | 5 | P Carreño Busta | 3 | 1 | |||||||||||||||||||||
| P Carreño Busta | 6 | 7 | P Carreño Busta | 6 | 6 | ||||||||||||||||||||||
| Í Cervantes | 6 | 6 | Í Cervantes | 2 | 4 | ||||||||||||||||||||||
| Q | A Beck | 1 | 3 | 1 | S Wawrinka | 6 | 4 | 6 | |||||||||||||||||||
| L Rosol | 2 | 6 | 3 | ||||||||||||||||||||||||
| 4 | J Isner | 7 | 65 | 65 | |||||||||||||||||||||||
| Q | R Ortega Olmedo | 3 | 4 | L Rosol | 5 | 77 | 77 | ||||||||||||||||||||
| L Rosol | 6 | 6 | L Rosol | 2 | 6 | 6 | |||||||||||||||||||||
 D Sela | 3 | 1 | A Kuznetsov | 6 | 1 | 0 | |||||||||||||||||||||
| A Kuznetsov | 6 | 6 | A Kuznetsov | 7 | 6 | ||||||||||||||||||||||
| M Youzhny | 3 | 5 | 7 | S Johnson | 5 | 4 | |||||||||||||||||||||
| 7 | S Johnson | 6 | 7 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | F Delbonis | 6 | 78 | ||||||||||||||||||||||||
| WC |  J Tipsarević | 1 | 66 | 6 | F Delbonis | 6 | 6 | ||||||||||||||||||||
 M Kukushkin | 2 | 1 |  T Bellucci | 3 | 0 | ||||||||||||||||||||||
| T Bellucci | 6 | 6 | 6 | F Delbonis | 4 | 3 | |||||||||||||||||||||
 E Gulbis | 7 | 7 | 3/WC | M Čilić | 6 | 6 | |||||||||||||||||||||
 R Berankis | 5 | 5 | E Gulbis | 4 | 65 | ||||||||||||||||||||||
| 3/WC | M Čilić | 6 | 77 | ||||||||||||||||||||||||
| 3/WC | M Čilić | 7 | 7 | ||||||||||||||||||||||||
| 8 | S Querrey | 65 | 4 | 2/WC | D Ferrer | 5 | 5 | ||||||||||||||||||||
| G García López | 77 | 6 | G García López | 6 | 77 | ||||||||||||||||||||||
| Q | E Donskoy | 65 | 6 | 3 | R Ram | 4 | 64 | ||||||||||||||||||||
| R Ram | 77 | 4 | 6 | G García López | 2 | 2 | |||||||||||||||||||||
| LL | F Mayer | 2 | 3 | 2/WC | D Ferrer | 6 | 6 | ||||||||||||||||||||
 D Istomin | 6 | 6 | D Istomin | 6 | 3r | ||||||||||||||||||||||
| 2/WC | D Ferrer | 3 | 2 | ||||||||||||||||||||||||
Evgeny Donskoy (qualified) Marco Chiudinelli (first round) Florian Mayer (qualifying competition, lucky loser)
Michael Linzer (first round)
Lorenzo Giustino (first round) Ivan Nedelko (first round) Michal Konečný (first round)
Nicolás Barrientos (first round)| First round | Qualifying competition | ||||||||||||
| 1 | Evgeny Donskoy | 77 | 6 | ||||||||||
| WC | Manuel Peña López | 63 | 3 | ||||||||||
| 1 | Evgeny Donskoy | 6 | 3 | 77 | |||||||||
 Tomislav Brkić | 3 | 6 | 63 | ||||||||||
| Tomislav Brkić | 4 | 6 | 6 | ||||||||||
| 5 | Lorenzo Giustino | 6 | 4 | 3 | |||||||||
| First round | Qualifying competition | ||||||||||||
| 2 | Marco Chiudinelli | 3 | 2 | ||||||||||
| Yann Marti | 6 | 6 | |||||||||||
| Yann Marti | 1 | 2 | |||||||||||
| Andreas Beck | 6 | 6 | |||||||||||
| Andreas Beck | 6 | 6 | |||||||||||
| 6 | Ivan Nedelko | 4 | 4 | ||||||||||
| First round | Qualifying competition | ||||||||||||
| 3 | Florian Mayer | 6 | 6 | ||||||||||
 Emilio Gómez | 3 | 4 | |||||||||||
| 3 | Florian Mayer | 6 | 4 | 3 | |||||||||
| Cristian Garín | 3 | 6 | 6 | ||||||||||
| Cristian Garín | 6 | 6 | |||||||||||
| 7 | Michal Konečný | 2 | 1 | ||||||||||
| First round | Qualifying competition | ||||||||||||
| 4 | Michael Linzer | 6 | 2 | 4 | |||||||||
| Roberto Ortega Olmedo | 3 | 6 | 6 | ||||||||||
| Roberto Ortega Olmedo | 6 | 78 | |||||||||||
| WC | Johan Nikles | 2 | 66 | ||||||||||
| WC | Johan Nikles | 2 | 6 | 6 | |||||||||
| 8 | Nicolás Barrientos | 6 | 2 | 3 | |||||||||
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