Louis Veuillot (11 October 1813 – 7 March 1883) was a French journalist and author who helped to popularize ultramontanism (a philosophy favoring Papal supremacy).

[5] In 1840, Veuillot joined the staff of the newspaper Univers Religieux, a journal created in 1833 by Abbé Migne, and soon helped make it the leading organ of ultramontane propaganda as L'Univers.

His methods of journalism, which made great use of irony and ad hominem criticism,[6] had already provoked more than one duel, and he was imprisoned for a brief time for his polemics against the University of Paris.

In 1879 Pope Pius IX[clarification needed] released a letter praising him, but also regretting his "bitter zeal" in advocating his views.

[13][14] He contemptuously dismissed Jews who criticized him as "the deicide people", claiming they were a foreign element which plotted to control all of French society.

[15] Veuillot's hatred intensified during the Mortara case to the point where it put him at odds with Napoleon III whom he had previously supported, causing the latter to temporarily suppress the journal.

[16] Drumont, who in his turn was an employer of Charles Maurras, was admired by Karl Lueger, whom Adolf Hitler acknowledged as an influence in Mein Kampf.