The Thermidorian Reaction (French: Raction thermidorienne or Convention thermidorienne, "Thermidorian Convention") is the common term, in the historiography of the French Revolution, for the period between the ousting of Maximilien Robespierre on 9 Thermidor II, or 27 July 1794, and the inauguration of the French Directory on 2 November 1795.

The "Thermidorian Reaction" was named after the month in which the coup took place and was the latter part of the National Convention's rule of France. It was marked by the end of the Reign of Terror, decentralization of executive powers from the Committee of Public Safety and a turn from the radical Jacobin policies of the Montagnard Convention to more conservative positions. Economic and general populism, dechristianization, and harsh wartime measures were largely abandoned, as the members of the Convention, disillusioned and frightened of the centralized government of the Terror, preferred a more stable political order that would have the approval of the affluent. The Reaction saw the Left suppressed by brutal force, including massacres, as well as the disbanding of the Jacobin Club, the dispersal of the sans-culottes, and the renunciation of the Montagnard ideology.

The French Revolution (French: Révolution française [ʁevɔlysjɔ̃ fʁɑ̃sɛːz]) was a period of radical political and societal change in France that began with the Estates General of 1789 and ended with the formation of the French Consulate in November 1799. Many of its ideas are considered fundamental principles of liberal democracy, while phrases like liberté, égalité, fraternité reappeared in other revolts, such as the 1917 Russian Revolution, and inspired campaigns for the abolition of slavery and universal suffrage. The values and institutions it created dominate French politics to this day.Its causes are generally agreed to be a combination of social, political and economic factors, which the existing regime proved unable to manage. In May 1789, widespread social distress led to the convocation of the Estates General, which was converted into a National Assembly in June. Continuing unrest culminated in the Storming of the Bastille on 14 July, which led to a series of radical measures by the Assembly, including the abolition of feudalism, the imposition of state control over the Catholic Church in France, and extension of the right to vote.

The next three years were dominated by the struggle for political control, exacerbated by economic depression and Civil disorder. Opposition from external powers like Austria, Britain, and Prussia resulted in the outbreak of the French Revolutionary Wars in April 1792. Disillusionment with Louis XVI led to the establishment of the French First Republic on 22 September 1792, followed by his execution in January 1793. In June, an uprising in Paris replaced the Girondins who dominated the National Assembly with the Committee of Public Safety, headed by Maximilien Robespierre.

This sparked the Reign of Terror, an attempt to eradicate alleged "counter-revolutionaries"; by the time it ended in July 1794, over 16,600 had been executed in Paris and the provinces. As well as its external enemies, the Republic faced internal opposition from both Royalists and Jacobins and in order to deal with these threats, the French Directory took power in November 1795. Despite a series of military victories, many won by Napoleon Bonaparte, political divisions and economic stagnation resulted in the Directory being replaced by the Consulate in November 1799. This is generally seen as marking the end of the Revolutionary period.