Louis-Eugène Cavaignac, French general and politician, 26th Prime Minister of France (b. 1802)
Louis-Eugène Cavaignac (French pronunciation: ​[lwi øʒɛn kavɛɲak]; 15 October 1802 – 28 October 1857) was a French general and politician who served as head of the executive power of France between June and December 1848, during the French Second Republic.

Born in Paris to a prominent family, Cavaignac was educated for a military career. Shortly after returning from service in the Morea expedition he took part in the July Revolution, and in 1832 was sent to Algeria, at the start of the French invasion, where he served with distinction for the next 16 years. He started his political career following the French Revolution of 1848 and the establishment of the Second Republic, being elected member of the National Assembly, and soon became one of the leaders of the Moderate Republicans.

As Minister of War in the French provisional government, Cavaignac was tasked with putting down the June Days uprising, a revolt by Parisian workers against the National Assembly, and for this was temporarily given emergency powers. After suppressing the insurrection he renounced his dictatorial powers, and was subsequently confirmed by the National Assembly as the provisional "Chief of the Executive Power" of France, governing for nearly six months until the 1848 presidential election, in which he ran but lost to Louis-Napoléon Bonaparte. He continued to serve as a representative in the National Assembly until its dissolution by the president during the 1851 coup d'état, and afterwards retired into private life.