Antoine Gentien (13 June 1905 – 2 September 1968) was a French tennis player whose career lasted from 1921 to 1951.

He won several tournaments in France, but at the French Championships his best result was reaching the quarterfinals in 1927.

Gentien made his debut at the French Championships in 1925 and lost in round two.

At the first French Championships held at Roland Garros in 1928, Gentien lost in the last 16 to Jack Crawford.

[5] Gentien lost in round one of the French Championships in 1936, but in 1937 reached the last 16 (losing to Christian Boussus).