2015 Open de Nice Côte d'Azur

The 2015 Open de Nice Côte d'Azur was a men's tennis tournament played on outdoor clay courts. It was the 31st edition of the Open de Nice Côte d'Azur and part of the ATP World Tour 250 series of the 2015 ATP World Tour. It took place at the Nice Lawn Tennis Club in Nice, France, from 17 May through 23 May 2015.

Seeds

 * Rankings are as of May 11, 2015.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇫🇷 Maxime Hamou
 * 🇦🇺 Thanasi Kokkinakis
 * 🇫🇷 Lucas Pouille

The following players received entry from the qualifying draw:
 * 🇧🇪 Ruben Bemelmans
 * 🇦🇺 Sam Groth
 * 🇫🇷 Gianni Mina
 * 🇳🇿 Michael Venus

The following players received entry as lucky losers:
 * 🇫🇷 Quentin Halys
 * 🇺🇸 Frances Tiafoe

Withdrawals

 * Before the tournament
 * 🇮🇹 Simone Bolelli →replaced by Dušan Lajović
 * 🇪🇸 Guillermo García López →replaced by James Duckworth
 * 🇸🇰 Martin Kližan →replaced by Benoît Paire
 * 🇦🇺 Thanasi Kokkinakis →replaced by Frances Tiafoe
 * 🇦🇷 Diego Schwartzman →replaced by Alexandr Dolgopolov
 * 🇫🇷 Gilles Simon →replaced by Quentin Halys

Retirements

 * 🇦🇺 Nick Kyrgios
 * 🇦🇺 Bernard Tomic

Seeds

 * Rankings are as of May 11, 2015.

Other entrants
The following pairs received wildcards into the doubles main draw:
 * Hsieh Cheng-peng / Wang Chieh-fu
 * 🇫🇷 Benoît Paire / 🇫🇷 Lucas Pouille

Withdrawals

 * Before the tournament
 * 🇦🇺 Bernard Tomic

Singles

 * 🇦🇹 Dominic Thiem defeated 🇦🇷 Leonardo Mayer, 6–7(8–10), 7–5, 7–6(7–2)

Doubles

 * Mate Pavić / 🇳🇿 Michael Venus defeated Jean-Julien Rojer / 🇷🇴 Horia Tecău, 7–6(7–4), 2–6, [10–8]