President of Haiti in the context of Ariel Henry

The United States occupation of Haiti began on July 28, 1915, when 330 U.S. Marines landed at Port-au-Prince, Haiti, after the National City Bank of New York (now Citibank) convinced U.S. President Woodrow Wilson to take control of the country's political and financial interests. The occupation took place following years of socioeconomic instability within Haiti that culminated with the lynching of Haitian President Vilbrun Guillaume Sam by a mob angered by his executions of political prisoners.

During the occupation, Haiti had three new presidents while the United States ruled as a military regime through martial law, led by Marines and the U.S.-created Gendarmerie of Haiti. A corvée system of forced labor was used by the U.S. for infrastructure projects, resulting in hundreds to thousands of deaths. The occupation ended the constitutional ban on foreign ownership of land, which had existed since the foundation of Haiti.

The 1991 Haitian coup d'état resulted in the overthrow of Jean-Bertrand Aristide, the democratically-elected president of Haiti, by a contingent of the Haitian military led by General Raoul Cédras and Chief of National Police Michel François. The coup began on 29 September 1991, when Haitian troops mutinied, launching a violent takeover that involved attacking Aristide's residence, committing massacres, and ultimately forcing Aristide into exile in Venezuela. Cédras announced the military's takeover on 30 September.

Prior to the coup, beginning in 1957, Haiti was ruled by the dictatorships of François and Jean-Claude Duvalier. Amidst political violence and growing poverty, an opposition movement began to form. Aristide arose as a prominent figure within this movement, participating in the protests that forced Jean-Claude to flee Haiti in 1986. After Jean-Claude's overthrow, Haiti was controlled by a series of military-dominated governments, but popular movements such as Aristide's Lavalas (transl. 'Avalanche') continued to mobilize, leading to Aristide's victory in the 1990–91 Haitian general election. As president, Aristide implemented populist and social democratic reforms focused on aiding Haiti's poor, which generated significant opposition from the military, wealthy elites, and the United States.

The existing political, economic, and social crisis began with protests across cities in Haiti on 7 July 2018 in response to rising fuel prices. These protests gradually evolved into demands for the resignation of President Jovenel Moïse. Led by opposition politician Jean-Charles Moïse (no relation), protesters demanded a transitional government, provision of social programs, and the prosecution of corrupt officials. From 2019 to 2021, massive protests called for the Jovenel Moïse government to resign. Moïse had come to power in the 2016 presidential election, which had voter turnout of only 21%. Previously, the 2015 elections had been annulled due to fraud. On 7 February 2021, supporters of the opposition allegedly attempted a coup d'état, leading to 23 arrests, as well as clashes between protestors and police.

On 7 July 2021, President Moïse was assassinated, allegedly by a group of 28 foreign mercenaries; three of the suspected assassins were killed and 20 arrested, while police searched for the other gunmen and the organizers of the attack. On 20 July Ariel Henry assumed the office of acting prime minister.

The government of Haiti is a semi-presidential republic, a multi-party system wherein the President of Haiti is head of state elected directly by popular elections. The Prime Minister acts as head of government and is appointed by the President, chosen from the majority party in the National Assembly. Executive power is exercised by the President and Prime Minister who together constitute the government. Legislative power is vested in both the government and the two chambers of the National Assembly of Haiti. The government is organized unitarily, thus the central government delegates powers to the departments without a constitutional need for consent. The current structure of Haiti's political system was set forth in the Constitution of March 29, 1987.

As of early 2025, criminal gangs controlled at least 85% of the capital and its metropolitan area and had expanded into key regions.

The first Republic of Haiti (French: République d'Haïti; Haitian Creole: Repiblik d Ayiti) controlled the southern portions of Haiti from 1806 until 1820. The republic, commonly referred to as South Haiti during its existence, was created on 17 October 1806, following the assassination of Emperor Jacques I and the overthrow of the First Empire of Haiti. The southern Republic of Haiti was ruled by General Alexandre Pétion, a free person of color, as President from 9 March 1807 until his death on 29 March 1818. He was succeeded by Jean-Pierre Boyer.

While the Republic of Haiti had control in the south, Henri Christophe ruled over the north of the country as President of the State of Haiti until 1811 when he proclaimed the Kingdom of Haiti with himself as King Henri I. Following King Henri's death in 1820, Haiti was unified as a single republican state under Boyer.

Faustin-Élie Soulouque (French pronunciation: [fostɛ̃ eli suluk]; 15 August 1782 – 3 August 1867) was a Haitian politician and military officer who served as President of Haiti from 1847 to 1849 and Emperor of Haiti from 1849 to 1859.

Soulouque was a general in the Haitian Army when he was appointed President of Haiti. He acquired autocratic powers, purged the army of the ruling elite, installed black loyalists in administrative positions and the nobility, and created a secret police and private army. Soulouque was an enthusiastic vodouisant, maintaining a staff of bokors and manbos, and gave the stigmatized vodou religion semi-official status which was openly practiced in Port-au-Prince. Soulouque declared the Second Empire of Haiti in 1849 after being proclaimed Emperor under the name Faustin I, and formally crowned in 1852. Several unsuccessful attempts to reconquer the Dominican Republic eroded his support and he abdicated in 1859 under pressure from General Fabre Geffrard. Soulouque was temporarily exiled to Jamaica before returning to Haiti where he died in 1867.

The Second Empire of Haiti, officially known as the Empire of Haiti (French: Empire d'Haïti, Haitian Creole: Anpi an Ayiti), was a state which existed from 1849 to 1859. It was established by the then-President, former Lieutenant General and Supreme Commander of the Presidential Guards under President Riché, Faustin Soulouque, who, inspired by Napoleon, declared himself Emperor Faustin I on 26 August 1849 at the Cathedral of Our Lady of the Assumption in Port-au-Prince.

Faustin's unsuccessful invasions (in part due to the diplomatic interference of the United States and Spain) in an attempt to reconquer the Dominican Republic (in 1849, 1850, 1855 and 1856), which had declared independence from Haiti in 1844, undermined his control over the country.

Charles Rivière-Hérard (French pronunciation: [ʃaʁl ʁivjɛʁ eʁaʁ]; 16 February 1789 – 31 August 1850) also known as Charles Hérard aîné (French pronunciation: [ʃaʁl eʁaʁ ɛne], Charles Hérard eldest) was an officer in the Haitian Army under Alexandre Pétion during his struggles against Henri Christophe. He was declared the president of Haiti on 4 April 1843. He was forced from office by revolutionaries on 3 May 1844.