| Men's singles | |
|---|---|
| 2016 Tampere Open | |
| Champion |  Kimmer Coppejans |
| Runner-up |  Aslan Karatsev |
| Final score | 6–4, 3–6, 7–5 |
Tristan Lamasine was the defending champion but chose not to defend his title.
Kimmer Coppejans won the title after defeating Aslan Karatsev 6–4, 3–6, 7–5 in the final.
Facundo Argüello (first round)
Jürgen Zopp (first round)
João Souza (quarterfinals)
Mathias Bourgue (first round)
Aleksandr Nedovyesov (second round) Kimmer Coppejans (champion) Joris De Loore (second round)
Nikola Milojević (first round, retired)| Semifinals | Final | ||||||||||||
| Aslan Karatsev | 3 | 6 | 6 | ||||||||||
 Rubén Ramírez Hidalgo | 6 | 1 | 4 | ||||||||||
| Aslan Karatsev | 4 | 6 | 5 | ||||||||||
| 6 | Kimmer Coppejans | 6 | 3 | 7 | |||||||||
 Pedro Sousa | 7 | 61 | 2 | ||||||||||
| 6 | Kimmer Coppejans | 5 | 77 | 6 | |||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | F Argüello | 6 | 2 | 4 | |||||||||||||||||||||||
| A Karatsev | 0 | 6 | 6 | A Karatsev | 6 | 69 | 6 | ||||||||||||||||||||
| FF Silva | 6 | 6 | FF Silva | 3 | 711 | 2 | |||||||||||||||||||||
 N Gombos | 4 | 3 | A Karatsev | 6 | 4 | 6 | |||||||||||||||||||||
| Q |  L Kiiski | 3 | 3 | Alt |  M Eriksson | 2 | 6 | 0 | |||||||||||||||||||
 S Griekspoor | 6 | 6 | S Griekspoor | 64 | 3 | ||||||||||||||||||||||
| Alt | M Eriksson | 3 | 710 | 3 | Alt | M Eriksson | 77 | 6 | |||||||||||||||||||
| 8 | N Milojević | 6 | 68 | 0r | A Karatsev | 3 | 6 | 6 | |||||||||||||||||||
| 4 | M Bourgue | 3 | 6 | 3 | R Ramírez Hidalgo | 6 | 1 | 4 | |||||||||||||||||||
| WC | P Niklas-Salminen | 6 | 2 | 6 | WC | P Niklas-Salminen | 1 | 2 | |||||||||||||||||||
| G Sakharov | 6 | 6 | G Sakharov | 6 | 6 | ||||||||||||||||||||||
| WC | Ristomatti Lanne | 1 | 3 | G Sakharov | 1 | 1 | |||||||||||||||||||||
| R Ramírez Hidalgo | 710 | 77 | R Ramírez Hidalgo | 6 | 6 | ||||||||||||||||||||||
| Yannik Reuter | 68 | 64 | R Ramírez Hidalgo | 7 | 78 | ||||||||||||||||||||||
| WC | V Ivanov | 2 | 2 | 7 | J De Loore | 5 | 66 | ||||||||||||||||||||
| 7 | J De Loore | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | A Nedovyesov | 6 | 6 | ||||||||||||||||||||||||
| Q | M Sekulic | 1 | 2 | 5 | A Nedovyesov | 5 | 3 | ||||||||||||||||||||
| D Pérez Sanz | 66 | 3 | P Sousa | 7 | 6 | ||||||||||||||||||||||
| P Sousa | 78 | 6 | P Sousa | 6 | 78 | ||||||||||||||||||||||
| Q | Alexander Vasilenko | 1 | 77 | 1 | 3 | J Souza | 4 | 66 | |||||||||||||||||||
| G Gigounon | 6 | 65 | 6 | G Gigounon | 2 | 2 | |||||||||||||||||||||
| F Horanský | 4 | 66 | 3 | J Souza | 6 | 6 | |||||||||||||||||||||
| 3 | J Souza | 6 | 78 | P Sousa | 7 | 61 | 2 | ||||||||||||||||||||
| 6 | K Coppejans | 6 | 6 | 6 | K Coppejans | 5 | 77 | 6 | |||||||||||||||||||
| I Nedelko | 3 | 0 | 6 | K Coppejans | 7 | 6 | |||||||||||||||||||||
 L Harris | 5 | 5 |  L Giustino | 5 | 1 | ||||||||||||||||||||||
| L Giustino | 7 | 7 | 6 | K Coppejans | 6 | 6 | |||||||||||||||||||||
| WC | E Vasa | 2 | 2 | Q |  H Hurkacz | 1 | 3 | ||||||||||||||||||||
| SE | Clément Geens | 6 | 6 | SE | C Geens | 3 | 1 | ||||||||||||||||||||
| Q | H Hurkacz | 3 | 6 | 6 | Q | H Hurkacz | 6 | 6 | |||||||||||||||||||
| 2 | J Zopp | 6 | 2 | 4 | |||||||||||||||||||||||
Filip Horanský and Jiří Veselý were the defending champions but were both ineligible to compete.
Bjorn Fratangelo was the defending champion, but was not eligible to participate.
Kimmer Coppejans won this event, defeating 5th-seed Filip Peliwo 6–1, 6–4 in the final.
Marin Čilić was the two-time defending champion, but withdrew before the tournament started due to an arm injury.
Ilija Bozoljac was the defending champion, but lost in the first round.
Guillermo García López was the defending champion, but lost to Lamine Ouahab in the second round.
Martin Kližan won the title, defeating Daniel Gimeno Traver in the final, 6–2, 6–2.
Richard Gasquet was the defending champion and successfully defended his title, defeating Paul-Henri Mathieu in the final, 7–5, 6–4.
Somdev Devvarman was the defending champion, but chose to compete in Delray Beach instead.
Kimmer Coppejans was the defending champion but lost to Go Soeda in the second round.
Martin Kližan was the defending champion, but withdrew before the tournament began.
Tobias Kamke was the defending champion but chose not to participate.
Robin Haase was the defending champion but chose not to defend his title.
Ivan Dodig was the defending champion but chose not to defend his title.
Albert Ramos Viñolas was the defending champion, but lost in the quarterfinals to Fernando Verdasco.
Kimmer Coppejans was the defending champion but lost in the first round to Tallon Griekspoor.
Félix Auger-Aliassime was the defending champion but chose not to defend his title.
Fabio Fognini was the defending champion, but chose not to defend his title.
Scott Griekspoor was the defending champion but lost in the second round to Tristan Lamasine.
Kimmer Coppejans was the defending champion but lost in the quarterfinals to Alejandro Davidovich Fokina.
This was the second edition of the tournament in the 2021 tennis season. Enzo Couacaud was the defending champion but lost in the second round to Alex Molčan.
Francisco Cerúndolo was the defending champion but chose not to defend his title.