Nicolas Devilder (born 25 March 1980) is a retired French tennis player.

Devilder reached a career high ATP singles ranking of World No.

He also reached a career high ATP doubles ranking of World No.

His only appearance in an ATP Tour-level final came in doubles at the 2008 Romanian Open on clay courts in Bucharest.

In what was an extraordinarily even-leveled back and forth tight match lasting several hours, Devilder and compatriot partner Paul-Henri Mathieu defeated Polish pair Mariusz Fyrstenberg and Marcin Matkowski 7–6(7–4), 6–7(9–11), [22–20] to win the championship.