| Singles | |
|---|---|
| 2015 Open du Pays d'Aix | |
| Champion |  Robin Haase |
| Runner-up |  Paul-Henri Mathieu |
| Final score | 7–6 (7–1), 6–2 |
Diego Schwartzman was the defending champion but chose not to compete.
Robin Haase took the title, beating Paul-Henri Mathieu 7–6 (7–1), 6–2
Blaž Kavčič (first round)
Malek Jaziri (semifinal, retired) Lucas Pouille (withdrew) Robin Haase (champion)
Filip Krajinović (first round)
Norbert Gombos (first round)
Andrey Golubev (second round)
Alexander Zverev (semifinals)| Semifinals | Final | ||||||||||||
| Paul-Henri Mathieu | 6 | 4 | 7 | ||||||||||
| 8 | Alexander Zverev | 4 | 6 | 5 | |||||||||
| Paul-Henri Mathieu | 61 | 2 | |||||||||||
| 4 | Robin Haase | 77 | 6 | ||||||||||
| 4 | Robin Haase | 6 | 2 | ||||||||||
| 2 | Malek Jaziri | 3 | 0r | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | B Kavčič | 65 | 3 | ||||||||||||||||||||||||
 J Millman | 77 | 6 | J Millman | 6 | 6 | ||||||||||||||||||||||
| D Guez | 5 | 4 | SE |  Í Cervantes | 1 | 1 | |||||||||||||||||||||
| SE | Í Cervantes | 7 | 6 | J Millman | 5 | 4 | |||||||||||||||||||||
 G Elias | 3 | 2 | P-H Mathieu | 7 | 6 | ||||||||||||||||||||||
| P-H Mathieu | 6 | 6 | P-H Mathieu | 6 | 7 | ||||||||||||||||||||||
| A Nedovyesov | 6 | 4 | 3 | 7 | A Golubev | 1 | 5 | ||||||||||||||||||||
| 7 | A Golubev | 4 | 6 | 6 | P-H Mathieu | 6 | 4 | 7 | |||||||||||||||||||
| LL | Antoine Escoffier | 1 | 1 | 8 | A Zverev | 4 | 6 | 5 | |||||||||||||||||||
| WC | Q Halys | 6 | 6 | WC | Q Halys | 5 | 2 | ||||||||||||||||||||
 A Ghem | 77 | 6 | A Ghem | 7 | 6 | ||||||||||||||||||||||
| A Beck | 63 | 2 | A Ghem | 63 | 4 | ||||||||||||||||||||||
| WC | C Lestienne | 7 | 5 | 1 | 8 | A Zverev | 77 | 6 | |||||||||||||||||||
| Q | José Pereira | 5 | 7 | 6 | Q | J Pereira | 1 | 66 | |||||||||||||||||||
 M Przysiężny | 4 | 0r | 8 | A Zverev | 6 | 78 | |||||||||||||||||||||
| 8 | A Zverev | 6 | 3 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | F Krajinović | 3 | 3 | ||||||||||||||||||||||||
| Q |  Y Marti | 6 | 6 | Q | Y Marti | 3 | 6 | 4 | |||||||||||||||||||
| M Bourgue | 5 | 3 | Q | J Eysseric | 6 | 1 | 6 | ||||||||||||||||||||
| Q | J Eysseric | 7 | 6 | Q | J Eysseric | 0 | 4 | ||||||||||||||||||||
| LL | A Kapaś | 77 | 6 | 4 | R Haase | 6 | 6 | ||||||||||||||||||||
| D Muñoz de la Nava | 63 | 3 | LL | A Kapaś | 1 | 4 | |||||||||||||||||||||
| M Bachinger | 6 | 4 | 3 | 4 | R Haase | 6 | 6 | ||||||||||||||||||||
| 4 | R Haase | 3 | 6 | 6 | 4 | R Haase | 6 | 2 | |||||||||||||||||||
| 6 | N Gombos | 4 | 6 | 2 | 2 | M Jaziri | 3 | 0r | |||||||||||||||||||
| WC | F Mayer | 6 | 3 | 6 | WC | F Mayer | 6 | 4 | 4 | ||||||||||||||||||
| Q | Laurent Rochette | 6 | 6 | Q | L Rochette | 2 | 6 | 6 | |||||||||||||||||||
| T Lamasine | 4 | 3 | Q | L Rochette | 1 | 1 | |||||||||||||||||||||
| A Montañés | 6 | 3 | 2 | 2 | M Jaziri | 6 | 6 | ||||||||||||||||||||
| SE | M Hamou | 4 | 6 | 6 | SE | M Hamou | 4 | 4 | |||||||||||||||||||
 J Zopp | 5 | 77 | 1 | 2 | M Jaziri | 6 | 6 | ||||||||||||||||||||
| 2 | M Jaziri | 7 | 64 | 6 | |||||||||||||||||||||||
Marin Čilić was the two-time defending champion, but lost in the first round to Kei Nishikori. 3rd seed Stanislas Wawrinka defeated 7th seed Xavier Malisse 7–5, 4–6, 6–1 in the final match.
Andreas Seppi was the defending champion, but he lost in the quarterfinals to Robin Haase.
Robin Haase won the title, defeating Albert Montañés 6–4, 4–6, 6–1 in the final.
Juan Martín del Potro was the defending champion, but withdrew before the tournament, because of illness.
Stanislas Wawrinka defeated David Ferrer 6–1, 6–4 in the final to win the title.
Robin Haase was the two-time defending champion, but lost in the semifinals to Marcel Granollers. Granollers went on to win the title, defeating Juan Mónaco in the final, 0-6, 7–6(7–3), 6–4.
Novak Djokovic defeated the defending champion David Ferrer in the final, 7–5, 7–5, to win the singles title at the 2013 Paris Masters.
Mikhail Youzhny was the defending champion, but lost to Robin Haase in the quarterfinals.
Pablo Andújar won the title, defeating Juan Mónaco in the final, 6–3, 7–5.
Novak Djokovic defeated Tomáš Berdych in the final, 7–5, 4–6, 6–3, to win the singles title at the 2015 Monte-Carlo Masters. It was his second Monte-Carlo Masters title, and he became the first man to win the first three ATP Tour Masters 1000 titles of the season.
Andre Begemann and Robin Haase were the defending champions, but Begemann chose not to participate this year. Haase played alongside Mikhail Youzhny, but lost in the first round to Oliver Marach and Aisam-ul-Haq Qureshi.
Aliaksandr Bury and Denis Istomin won the title, defeating Marach and Qureshi in the final, 3–6, 6–2, [10–5].
Roger Federer was the defending champion and successfully defended his title, defeating Rafael Nadal in the final, 6–3, 5–7, 6–3. This was his tenth consecutive final in a row in this event.
Jiří Veselý was the defending champion, but lost in the first round to Roberto Bautista Agut.
Bautista Agut went on to win the title, defeating Jack Sock in the final, 6–1, 1–0, ret.
Ivan Dodig and Marcelo Melo were the defending champions, but chose to compete in Dubai and São Paulo, respectively, instead.
Treat Huey and Max Mirnyi won the title, defeating Philipp Petzschner and Alexander Peya in the final, 7–6(7–5), 6–3.
Roger Federer was the three-time defending champion, but lost in the semifinals to Alexander Zverev.
Damir Džumhur was the defending champion but lost in the semifinals to Jan-Lennard Struff.
Viktor Troicki and Nenad Zimonjić were the defending champions, but lost in the first round to Robin Haase and Matwé Middelkoop.
Andrey Rublev was the defending champion, but lost in the quarterfinals to Robin Haase. This was Rublev's first tournament back on tour after missing three months due to a stress fracture in his back.
Guillermo Durán and Andrés Molteni were the defending champions, but Durán chose not to participate and Molteni chose to compete in Båstad instead.
Oliver Marach and Philipp Oswald were the defending champions, but they chose to compete alongside different partners in Hamburg instead.
Jo-Wilfried Tsonga was the defending champion, but lost in the second round to Gaël Monfils.
Julio Peralta and Horacio Zeballos were the defending champions, but Peralta chose not to participate this year. Zeballos played alongside Leonardo Mayer, but lost in the first round to Pablo Cuevas and Nicolás Jarry.
Nikola Mektić and Mate Pavić were the defending champions, but lost in the first round to Robin Haase and Matwé Middelkoop.