Jacques-Marie-Achille Ginoulhiac (born at Montpellier, department of Hérault, 3 December 1806; died there 17 November 1875) was a French bishop.

Consecrated Bishop of Grenoble in 1853, he was appointed the following year assistant to the pontifical throne, and knight of the Legion of Honour.

At the Council of the Vatican, Ginoulhiac spoke publicly on philosophical errors (30 December 1869), on the rule of faith (22 March and 1 April 1870), and on the pope's infallibility (23 May and 28 June 1870).

Fearing the Prussian invasion, the inhabitants of Lyon vowed to erect a basilica at Fourvières if the city were spared.

While at Grenoble, Bishop Ginoulhiac wrote and published several letters and pastorals, especially on the condition of the Pontifical States (1860), on Ernest Renan's Life of Jesus (1863) and on the accusations of the press against the Encyclical of 8 December 1864 and the Syllabus (1865).