The Brabant Revolution or Brabantine Revolution (French: Révolution brabançonne, Dutch: Brabantse Omwenteling), sometimes referred to as the Belgian Revolution of 1789–1790 in older writing, was an armed insurrection that occurred in the Austrian Netherlands (modern-day Belgium) between October 1789 and December 1790. The revolution, which occurred at the same time as revolutions in France and Liège, led to the brief overthrow of Habsburg rule and the proclamation of a short-lived polity, the United Belgian States.

The revolution was the product of opposition which emerged to the liberal reforms of Emperor Joseph II in the 1780s. These were perceived as an attack on the Catholic Church and the traditional institutions in the Austrian Netherlands. Resistance, focused in the autonomous and wealthy Estates of Brabant and Flanders, grew. In the aftermath of rioting and disruption in 1787, known as the Small Revolution, many dissidents took refuge in the neighboring Dutch Republic where they formed a rebel army. Soon after the outbreak of the French and Liège revolutions, this émigré army crossed into the Austrian Netherlands and decisively defeated the Austrians at the Battle of Turnhout in October 1789. The rebels, supported by uprisings across the territory, soon took control over virtually all the Southern Netherlands and proclaimed independence. Despite the tacit support of Prussia, the independent United Belgian States, established in January 1790, received no foreign recognition and the rebels soon became divided along ideological lines. The Vonckists, led by Jan Frans Vonck, advocated progressive and liberal government, whereas the Statists, led by Henri Van der Noot, were staunchly conservative and supported by the Church. The Statists, who had a wider base of support, soon drove the Vonckists into exile through a terror.

By mid-1790, Habsburg Austria had ended its war with the Ottoman Empire and prepared to suppress the Brabant revolutionaries. The new Holy Roman Emperor, Leopold II, a liberal like his predecessor, proposed an amnesty for the rebels. After a Statist army was overcome at the Battle of Falmagne, the territory was quickly overrun by Imperial forces, and the revolution was defeated by December. The Austrian reestablishment was short-lived, however, and the territory was soon overrun by the French during the French Revolutionary Wars.

Because of its distinctive course, the Brabant Revolution had been extensively used in historical comparisons with the French Revolution. Some historians, following Henri Pirenne, have seen it as a key moment in the formation of a Belgian nation-state, and an influence on the Belgian Revolution of 1830.