Mostaganem (Arabic: ولاية مستغانم) is a province (wilaya) of Algeria, with a population of 892165 inhabitants in 2019, with a density of 393/square kilometers.

The land relief in Mostaganem Province can be divided into four regions: the Dahra Range to the east, the Mostaganem Plateau to the south, the Chelif River valley which separates the two highland regions, and the plains on the province's southern border which lie next to the marshes of the Macta.

[2] The Mostaganem Plateau covers eleven municipalities in the southern part of the province: Mostaganem, Ain Tedles, Sour, Bouguirat, Sirat, Souaflia, Mesra, Ain Sidi Cherif, Mansourah, Touahria and Sayada.

[4] After the country's independence, it was replaced by irrigated market gardening and the culture of citrus fruits and cereals.

[4] However, in certain sectors east of Mostaganem, the replacement of the vineyards caused the appearance of small dunes as a consequence of the resumption of soil movement.