Gustave Émile Haug (19 June 1861 - 28 August 1927) was a French geologist and paleontologist known for his contribution to the geosyncline theory.

[2] In 1902 he was appointed president of the Société géologique de France, and from 1917 to 1927, was a member of the Académie des sciences.

[2] The third part of Philippe Thomas's Essai d'une description géologique de la Tunisie, which was to have described the Tertiary formations, was completed and published by his friend, Professor Léon Pervinquière (1873–1913), holder of the Chair of Geology at the Faculty of Science in Paris.

[3] Émile Haug published the Essai d'une description géologique de la Tunisie after Pervinquiere had also died, and presented it to the Geological Society of France in session on 6 April 1914.

Haug's major work, "Traité de géologie", was published in two volumes (1907–11; Vol.