| Singles | |
|---|---|
| 2015 Open Harmonie mutuelle | |
| Champion |  Nicolas Mahut |
| Runner-up |  Yūichi Sugita |
| Final score | 3–6, 7–6(7–3), 6–4 |
Andreas Beck was the defending champion, but lost in the second round.
Nicolas Mahut won the title, defeating Yūichi Sugita in the final, 3–6, 7–6(7–3), 6–4.
Lucas Pouille (semifinals)
Andreas Beck (second round) Nicolas Mahut (champion)
Igor Sijsling (first round) Yūichi Sugita (final)
Jan Hernych (second round) David Guez (first round)
Edward Corrie (first round)| Semifinals | Final | ||||||||||||
| 1 | Lucas Pouille | 5 | 4 | ||||||||||
| 3 | Nicolas Mahut | 7 | 6 | ||||||||||
| 3 | Nicolas Mahut | 3 | 77 | 6 | |||||||||
| 5 | Yūichi Sugita | 6 | 63 | 4 | |||||||||
| Q | Constant Lestienne | 4 | 2 | ||||||||||
| 5 | Yūichi Sugita | 6 | 6 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | L Pouille | 7 | 3 | 77 | |||||||||||||||||||||||
| WC | Q Halys | 5 | 6 | 64 | 1 | L Pouille | 6 | 3 | 6 | ||||||||||||||||||
 G Gigounon | 64 | 2 | M Michalička | 4 | 6 | 3 | |||||||||||||||||||||
| M Michalička | 77 | 6 | 1 | L Pouille | 6 | 6 | |||||||||||||||||||||
| Y Uchiyama | 1 | 3 |  N Mektić | 2 | 4 | ||||||||||||||||||||||
| N Mektić | 6 | 6 | N Mektić | 4 | 6 | 6 | |||||||||||||||||||||
| J Mertl | 7 | 62 | 6 | J Mertl | 6 | 3 | 4 | ||||||||||||||||||||
| 8 | E Corrie | 5 | 7 | 3 | 1 | L Pouille | 5 | 4 | |||||||||||||||||||
| 3 | N Mahut | 6 | 77 | 3 | N Mahut | 7 | 6 | ||||||||||||||||||||
| Q | R Becker | 4 | 65 | 3 | N Mahut | 6 | 6 | ||||||||||||||||||||
 P Krstin | 1 | 2 |  Y Marti | 3 | 0 | ||||||||||||||||||||||
| Y Marti | 6 | 6 | 3 | N Mahut | 77 | 5 | 77 | ||||||||||||||||||||
| Jules Marie | 6 | 6 | R Boutillier | 62 | 7 | 65 | |||||||||||||||||||||
| J Cagnina | 2 | 3 | J Marie | 4 | 2 | ||||||||||||||||||||||
| R Boutillier | 6 | 3 | 77 | R Boutillier | 6 | 6 | |||||||||||||||||||||
| 7 | D Guez | 2 | 6 | 61 | |||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 6 | J Hernych | 6 | 6 | ||||||||||||||||||||||||
| WC | G Burquier | 4 | 4 | 6 | J Hernych | 6 | 4 | 1 | |||||||||||||||||||
| Q | C Lestienne | 6 | 3 | 6 | Q | C Lestienne | 4 | 6 | 6 | ||||||||||||||||||
| WC | G Barrère | 2 | 6 | 3 | Q | C Lestienne | 6 | 6 | |||||||||||||||||||
| M Vaïsse | 4 | 2 | V Millot | 1 | 4 | ||||||||||||||||||||||
| V Millot | 6 | 6 | V Millot | 7 | 6 | ||||||||||||||||||||||
 U Ignatik | 2 | 6 | 6 | U Ignatik | 5 | 1 | |||||||||||||||||||||
| 4 | I Sijsling | 6 | 4 | 4 | Q | C Lestienne | 4 | 2 | |||||||||||||||||||
| 5 | Y Sugita | 6 | 3 | 5 | Y Sugita | 6 | 6 | ||||||||||||||||||||
| Q | M Willis | 4 | 0r | 5 | Y Sugita | 6 | 6 | ||||||||||||||||||||
| Q | H Nys | 4 | 5 | Y Mertens | 0 | 3 | |||||||||||||||||||||
| Y Mertens | 6 | 7 | 5 | Y Sugita | 5 | ||||||||||||||||||||||
 F Nielsen | 3 | 65 | J Huta Galung | 3r | |||||||||||||||||||||||
| J Huta Galung | 6 | 77 | J Huta Galung | 6 | 6 | ||||||||||||||||||||||
| WC | Laurent Rochette | 1 | 77 | 5 | 2 | A Beck | 3 | 4 | |||||||||||||||||||
| 2 | A Beck | 6 | 62 | 7 | |||||||||||||||||||||||
Juan Martín del Potro was the defending champion, and won for the second straight year in the final 3–6, 7–5, 7–6(8–6), over Andy Roddick.
Marc Gicquel was the defending champion; however, he didn't take part in these championships this year.
Kristof Vliegen defeated 6–2, 6–7(6), 6–3 Andreas Beck in the final.
Nicolas Mahut was the defending champion and 2nd seed. He reached the final, but lost to 1st seed Grigor Dimitrov 2–6, 6–7(4–7).
Dmitry Tursunov claimed the title, defeating Andreas Beck 6–4, 6–4 in the final.
Conor Niland is the defending champion.
Benoît Paire won the title after defeating Grega Žemlja 6–7(6–8), 6–4, 6–4 in the final.
Farrukh Dustov was the defending champion was beaten in the Second Round by Yuichi Sugita.
Grega Žemlja won the title, defeating Wu Di 6–3, 6–0 in the final.
Uladzimir Ignatik was the defending champion, but decided not to compete.
John Millman was the defending champion but decided not to participate.
Rik de Voest was the defending champion but decided not to compete.
Steve Johnson was the defending champion, but chose to compete in the 2014 Gerry Weber Open instead.
Nicolas Mahut, the defending champion, lost 2–6, 4–6 in the final to Steve Darcis.
This article displays the qualifying draw for the Men's singles at the 2015 Australian Open.
Kenny de Schepper was the defending champion, but lost in the quarterfinals.
The previous year's runner-up Norbert Gombos won the title, defeating Benoît Paire in the final, 6–1, 7–6(7–4).
Kei Nishikori was the defending champion, but lost to Benoît Paire in the semifinals.
Viktor Troicki was the defending champion and successfully defended his title, defeating Grigor Dimitrov in the final, 2–6, 6–1, 7–6(9–7).
Florian Mayer was the defending champion, but lost to Roger Federer in the quarterfinals.
Gilles Müller was the defending champion, but lost in the second round to Matthew Ebden.
Nicolas Mahut and Édouard Roger-Vasselin were the defending champions, but Mahut chose not to defend the title and Roger-Vasselin chose to compete in Stockholm instead.
Daniil Medvedev was the defending champion, but chose not to defend his title.
Andreas Seppi was the defending champion but lost in the second round to Matthias Bachinger.