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.
Singles main-draw entrants
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
Doubles main-draw entrants
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
Finals
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]