The invasion of Algiers in 1830 was a large-scale military operation by which the Kingdom of France, ruled by Charles X, invaded and conquered the Deylik of Algiers.

Algiers was annexed by the Ottoman Empire in 1529 after the capture of Algiers in 1529 and had been under direct rule until 1710, when Baba Ali Chaouch achieved de facto independence from the Ottomans, though the Regency was still nominally a part of the Ottoman Empire.The Deylik of Algiers elected its rulers through a parliament called the Divan of Algiers. These rulers/kings were known as Deys. The state could be best described as an Elective monarchy.A diplomatic incident in 1827, the so-called Fan Affair (Fly Whisk Incident), served as a pretext to initiate a blockade against the port of Algiers. After three years of standstill and a more severe incident in which a French ship carrying an ambassador to the dey with a proposal for negotiations was bombarded, the French determined that more forceful action was required. Charles X was also in need of diverting attention from turbulent French domestic affairs that culminated with his deposition during the later stages of the invasion in the July Revolution.

The invasion of Algiers began on 5 July 1830 with a naval bombardment by a fleet under Admiral Duperr and a landing by troops under Louis Auguste Victor de Ghaisne, comte de Bourmont. The French quickly defeated the troops of Hussein Dey, the Deylikal ruler, but native resistance was widespread. This resulted in a protracted military campaign, lasting more than 45 years, to root out popular opposition to the colonisation. The so-called "pacification" was marked by resistance of figures such as Ahmed Bey, Abd El-Kader and Lalla Fatma N'Soumer.

The invasion marked the end of the several centuries old Regency of Algiers, and the beginning of French Algeria. In 1848, the territories conquered around Algiers were organised into three dpartements, defining the territories of modern Algeria.



French Algeria (French: Alger to 1839, then Algérie afterwards; unofficially Algérie française, Arabic: الجزائر المستعمرة), also known as Colonial Algeria, was the period of French colonisation of Algeria. French rule in the region began in 1830 with the invasion of Algiers and lasted until the end of the Algerian War of Independence in 1962. While the administration of Algeria changed significantly over the 132 years of French rule, the Mediterranean coastal region of Algeria, housing the vast majority of its population, was ruled as an integral part of France from 1848 until its independence.

As one of France's longest-held overseas territories, Algeria became a destination for hundreds of thousands of European immigrants known as colons, and later as pieds-noirs. However, the indigenous Muslim population remained the majority of the territory's population throughout its history. Gradually, dissatisfaction among the Muslim population due to their lack of political and economic freedom fueled calls for greater political autonomy, and eventually independence from France. Tensions between the two groups came to a head in 1954, when the first violent events began of what was later called the Algerian War, characterised by guerrilla warfare and crimes against humanity used by the French in order to stop the revolt. The war ended in 1962, when Algeria gained independence following the Evian agreements in March 1962 and the self-determination referendum in July 1962.

During its last years of being a French colony, Algeria was an integral part of France, a founding member of the European Coal and Steel Community and the European Economic Community.