Auguste Hubert Warnier (8 January 1810 – 15 March 1875) was a French medical doctor, journalist and politician who spent most of his career in Algeria.

Later he took the view that the indigenous people had destroyed the once-fertile environment of Algeria, became a proponent of French colonization and opposed the "Arab Kingdom" policy of Napoleon III.

[1] His parents were Jean-Louis Warnier (1774–1814), Lieutenant in the 6th line regiment and Knight of the Legion of Honour, and Marie Salomé Victoire Seguin (c.

[3] Warnier joined the Service des Affaires Arabes in 1837 and served in Mascara until 1839 treating the indigenous people and fighting cholera.

[3] Warnier and Joanny André Napoléon Perier were the two physicians on the Scientific Commission for the Exploration of Algeria, which operated from 1840 to 1842 and resulted in the publication of 39 volumes on a range of subjects.

[11] Daumas was among those who thought the Kabyle people, the largest Berber group, were partly Germanic in origin, had formerly been Christians and had not been fully converted to Islam.

[13] Duveyrier left in May 1859 and after an exhausting journey returned to Warnier's house on 5 December 1861, emaciated and delirious with fever.

His L'Algérie devant le Sénat (1863), a collection of his articles from L'Opinion Nationale, laid out the principles for colonization of Algeria by civilian settlers.

[17] Warnier gained great prestige among the settlers since he and Jules Duval(fr) in Paris were leaders of a group opposed to the emperor's Arab Kingdom policy.

[20] He wrote in 1865, When the time comes that an imperial decree orders the creation of private property among the Arab tribes, a complete social revolution will be decreed and it is not at all certain that the tribespeople accustomed to the yoke of their tribal leaders ... will not themselves repudiate the benefits of private property, in order to preserve the communism of collective ownership more in harmony with their nomadic lifestyle.

[20] Warnier thought the imperial government was sacrificing the interests of the French settlers in favour of the Arab aristocracy, which wanted to prevent progress and maintain their feudal control.

He provided proof, based on crop production and taxes paid, that one settler was worth ten indigenous people.

In the Assembly he sat with the left, voted against the bishops' petition, against the resignation of Adolphe Thiers, against the septennate and against the ministry of Albert, 4th duc de Broglie.

Warnier used the narrative of destruction of the environment by the local people to justify the 1873 settlers' property law that took his name.

[25] While deputy, Warnier introduced Hippolyte Mircher to the future explorer of French Africa Paul Soleillet.

[13] Warnier also introduced Soleillet to Léon Cremieux, president of the Israelite Alliance of Algeria, who had obtained French citizenship for Algerian Jews.