| Singles | |
|---|---|
| 2016 Challenger Ciudad de Guayaquil | |
| Champion |  Nicolás Kicker |
| Runner-up |  Arthur De Greef |
| Score | 6–3, 6–2 |
Gastão Elias was the defending champion but lost in the first round to Guilherme Clezar.
Nicolás Kicker won the title after defeating Arthur De Greef 6–3, 6–2 in the final.
Gastão Elias (first round) Facundo Bagnis (quarterfinals) Renzo Olivo (withdrew) Carlos Berlocq (first round, retired)
Víctor Estrella Burgos (first round)
Santiago Giraldo (first round)
Rogério Dutra Silva (first round) João Souza (first round)
Ernesto Escobedo (second round)| Semifinals | Final | ||||||||||||
| Arthur De Greef | 7 | 7 | |||||||||||
| Guido Andreozzi | 5 | 5 | |||||||||||
| Arthur De Greef | 3 | 2 | |||||||||||
| Nicolás Kicker | 6 | 6 | |||||||||||
| Nicolás Kicker | 6 | 6 | |||||||||||
| Q | João Pedro Sorgi | 3 | 1 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | G Elias | 2 | 6 | 3 | |||||||||||||||||||||||
| G Clezar | 6 | 3 | 6 | G Clezar | 6 | 2 | 3 | ||||||||||||||||||||
| P Sousa | 1r | A De Greef | 4 | 6 | 6 | ||||||||||||||||||||||
| A De Greef | 3 | A De Greef | 6 | 6 | |||||||||||||||||||||||
| E Struvay | 2 | 0r |  M Bourgue | 4 | 2 | ||||||||||||||||||||||
| C Zampieri | 6 | 0 | C Zampieri | 3 | 1 | ||||||||||||||||||||||
| M Bourgue | 4 | 6 | 6 | M Bourgue | 6 | 6 | |||||||||||||||||||||
| 8 | J Souza | 6 | 0 | 2 | A De Greef | 7 | 7 | ||||||||||||||||||||
| 4 | C Berlocq | 1 | 6 | 3r | G Andreozzi | 5 | 5 | ||||||||||||||||||||
| A Ghem | 6 | 4 | 5 | A Ghem | 6 | 6 | |||||||||||||||||||||
| LL |  M Linzer | 6 | 5 | LL | M Linzer | 3 | 2 | ||||||||||||||||||||
| Q |  Bastián Malla | 2 | 2r | A Ghem | 4 | 4 | |||||||||||||||||||||
| G Andreozzi | 6 | 64 | 6 | G Andreozzi | 6 | 6 | |||||||||||||||||||||
| WC |  E Gómez | 3 | 77 | 3 | G Andreozzi | 7 | 6 | ||||||||||||||||||||
| WC | I Endara | 78 | 6 | WC | I Endara | 5 | 2 | ||||||||||||||||||||
| 7 | R Dutra Silva | 66 | 2 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | S Giraldo | 5 | 6 | 3 | |||||||||||||||||||||||
| Q | DE Galán | 7 | 3 | 6 | Q | DE Galán | 5 | 3 | |||||||||||||||||||
| Q | A Molteni | 6 | 6 | Q | A Molteni | 7 | 6 | ||||||||||||||||||||
| C Garin | 4 | 3 | Q | A Molteni | 3 | 0r | |||||||||||||||||||||
| N Kicker | 6 | 6 | N Kicker | 6 | 3 | ||||||||||||||||||||||
| WC | G Escobar | 1 | 1 | N Kicker | 3 | 6 | 6 | ||||||||||||||||||||
| A Velotti | 2 | 3 | 9 | E Escobedo | 6 | 2 | 1 | ||||||||||||||||||||
| 9 | E Escobedo | 6 | 6 | N Kicker | 6 | 6 | |||||||||||||||||||||
| 5 | V Estrella Burgos | 3 | 77 | 67 | Q | JP Sorgi | 3 | 1 | |||||||||||||||||||
| Q | JP Sorgi | 6 | 65 | 79 | Q | JP Sorgi | 6 | 1 | 6 | ||||||||||||||||||
| WC | R Quiroz | 2 | 2 | L Mayer | 3 | 6 | 1 | ||||||||||||||||||||
| L Mayer | 6 | 6 | Q | JP Sorgi | 4 | 6 | 6 | ||||||||||||||||||||
| A Falla | 6 | 5 | 3 | 2 | F Bagnis | 6 | 4 | 4 | |||||||||||||||||||
 M Arévalo | 4 | 7 | 6 | M Arévalo | 2 | 6 | 4 | ||||||||||||||||||||
| J Hernández | 7 | 64 | 4 | 2 | F Bagnis | 6 | 4 | 6 | |||||||||||||||||||
| 2 | F Bagnis | 5 | 77 | 6 | |||||||||||||||||||||||
Ricardo Mello was the defending champion but decided not to participate.
Thiago Alves won the title after defeating Gastão Elias 7–6(7–5), 7–6(7–1) in the final.
David Ferrer was the defending champion, and he successfully defended his title by defeating Stanislas Wawrinka in the final 6–4, 3–6, 6–1.
Ernests Gulbis was the defending champion, but chose to compete in Marseille instead.
Marin Čilić won the title, defeating Kevin Anderson in the final, 7–6(8–6), 6–7(7–9), 6–4.
Rafael Nadal was the defending champion but chose not to compete.
Julian Reister was the defending champion but chose not to compete.
Dominic Thiem defeated Nicolás Almagro in the final, 7–6(7–2), 3–6, 7–6(7–4). He saved a match point en route to the title, in the semifinals against defending champion Rafael Nadal.
David Ferrer was the defending champion, but lost in the quarterfinals to Dominic Thiem.
Pablo Cuevas was the defending champion and successfully defended his title, defeating Pablo Carreño Busta in the final, 7–6(7–4), 6–3.
Marco Cecchinato was the defending champion but chose not to participate.
Máximo González was the defending champion, but chose not to defend his title.
Stan Wawrinka was the defending champion, but withdrew before the tournament began.
Gastão Elias was the defending champion but lost in the first round to André Ghem.
Juan Sebastián Cabal and Robert Farah were the defending champions, but lost in the final to Pablo Carreño Busta and Pablo Cuevas, 4–6, 7–5, [8–10].
Elias Ymer was the defending champion but lost in the first round to Lukáš Rosol.
The 2017 ATP Lyon Open was a men's tennis tournament that was played on outdoor clay courts. It was the 1st edition of the Lyon Open and part of the ATP World Tour 250 series of the 2017 ATP World Tour. It took place in the city of Lyon, France, from May 21 through May 27, 2017.
Martin Kližan was the defending champion, but withdrew before the tournament began.
Gonzalo Lama was the defending champion but lost in the first round to João Souza.
Christian Garín was the defending champion but lost in the second round to Gastão Elias.
Alexandr Dolgopolov was the defending champion, but withdrew before the tournament began.
Dominic Thiem was the defending champion, but lost in the quarterfinals to Fernando Verdasco.