Gabon favoured close relations with France and the continued use of French language and culture. It opposed political ties with the other states of sub-Saharan Africa, however, because of dissatisfaction with the previous federation and a desire to develop its natural resources for its own benefit.

Attempts by the republic’s first president, Léon M’ba, to institute a single-party regime provoked a rebellion by young military officers in February 1964. But M’ba, who had strong backing from French economic interests, was restored to power by French forces sent on orders from Pres. Charles de Gaulle. The intervention made possible the rise of Albert-Bernard (later Omar) Bongo to the presidency after M’ba’s death in 1967 and the establishment of a single-party regime in the following year, the only party being Bongo’s Gabonese Democratic Party (Parti Démocratique Gabonais; PDG). Under the single-party regime, Bongo was elected to the presidency in 1973 and was reelected in 1979. In 1982 a new opposition group, the Movement for National Renewal (Mouvement de Redressement National), called for multiparty democracy, exercise of civil liberties, and an end to governmental corruption, but it was quickly suppressed; Bongo was again reelected in 1986.

In the mid-1980s, declining petroleum prices caused an economic downturn. Austerity measures imposed by the government led to antigovernment demonstrations in Libreville and Port-Gentil in early 1990. This unrest led to the creation in March of a national conference, which included opposition groups, to discuss political reform. As a result, constitutional amendments adopted in May restored the multiparty system. That same month the death of an opposition leader under mysterious circumstances sparked violent disorders that led to French military intervention at Port-Gentil to protect French nationals and their property. Order was restored, and implementation of the plans for political reform continued. Legislative elections were held in the fall, and, although opposition parties won seats in the new legislative assembly, electoral irregularities allowed the PDG to retain a small majority. The following year a new constitution was promulgated in March.

After the restoration of a multiparty democracy, Bongo was reelected in 1993 and 1998, although both elections were clouded with allegations of fraud. A constitutional amendment passed in 2003 removed presidential term limits and allowed Bongo to stand in the 2005 election, which he also won. In general, the PDG was equally successful during the 1990s and 2000s in legislative and most local elections. However, the PDG’s overall grip on power was briefly threatened by popular dissatisfaction following the December 1993 presidential election and a subsequent 50 percent devaluation of the currency in January 1994, which sparked protests in several cities, during which three dozen people were killed and scores injured. After the demonstrations were suppressed, the government granted modest salary increases and placed controls on soaring prices of largely imported basic commodities.

Many of Gabon’s financial problems resulted from protracted and large-scale corruption among government officials and business leaders. Although this group comprised just 2 percent of the population, they came to control some 80 percent of all personal income. In addition to receiving large salaries, they diverted funds from public works and services, as well as the income from at least one-fourth of the oil sales, and transferred vast sums of money to foreign accounts. To counteract this financial drain, the government borrowed money, and by the late 1990s debt service constituted some two-fifths of the national budget. The government turned regularly to France for funds and for help in canceling and rescheduling debts. By the late 1990s Gabon was under pressure from the International Monetary Fund to privatize state corporations and to eliminate the diversion of state funds, which the country was able to show some progress with during the 2000s. Gabon was able to reschedule a significant amount of debt in 2004.

In 2009 rumours persisted that Bongo was not in good health, particularly in May, when he suspended his presidential duties for the first time since he took office in 1967 and checked into a clinic in Spain—ostensibly to rest and mourn the death of his wife, who had passed away in March. Initial reports of his death on June 7, 2009, were denied by the Gabon government; an official announcement the next day indicated he died on June 8. Senate president Rose Francine Rogombé was sworn in as interim president two days later, and an election was scheduled for August 30. More than 20 candidates initially announced their intent to stand in the election, including Bongo’s son, defense minister Ali Ben Bongo, who was selected to be the PDG’s candidate. After a slight delay in the release of the election results and amid allegations of fraud and voting irregularities, Bongo was declared the winner with slightly more than two-fifths of the vote. Because of the allegations of electoral misconduct, many opposition members protested the declaration of Bongo’s victory and held demonstrations in several cities throughout the country, some of which turned violent as protesters clashed with Gabonese security officials. Opposition groups requested a recount, the results of which were announced in October and upheld Bongo’s win. He was inaugurated on October 16, 2009.

While in office, Bongo made efforts to diversify Gabon’s economy and build much needed social and economic infrastructure. Economic inequality persisted, however: some one-third of the population lived below the poverty line, leading to general discontent. Internationally, Bongo gained recognition and accolades for his strides in conservation and wildlife protection.

Gabon’s next presidential election was held in August 2016. Of all the candidates Bongo faced in the August 27 contest, his strongest challenger was Jean Ping, a former diplomat who had served as president of the UN General Assembly and as chair of the African Union Commission. Prior to the election, several opposition groups opted not to field their own candidate and instead supported Ping’s candidacy. The election was criticized by international observers as lacking transparency, and a delay in the release of the results had the country on edge. Bongo was declared the winner with 49.8 percent of the vote, just narrowly beating Ping, who reportedly received 48.2 percent. Many questioned the reported voter turnout in Bongo’s home province, which was allegedly more than 99 percent, compared with a nationwide turnout of less than 60 percent. Protesters demonstrated against Bongo’s alleged victory, even setting fire to the country’s parliament building in Libreville, and there were calls from within the country as well as from the international community for the electoral commission to release the results of all the polling stations.

In September Ping filed a case with the Constitutional Court, challenging the results of the election. Two weeks later the court ruled to uphold Bongo’s victory. As part of the ruling, it cancelled the results from 21 polling stations, which served to increase the president’s lead over Ping; the final result was 50.66 percent for Bongo and 47.24 percent for Ping. Against the backdrop of Ping rejecting the court’s ruling and the international community expressing concern over the proceedings, Bongo was hastily sworn in for his second term on September 27, 2016.

The status of Bongo’s health came under heavy speculation beginning in October 2018, after he became ill and was hospitalized while attending an event outside the country. The government cited fatigue as the reason Bongo was receiving medical treatment abroad, but rumours that he had suffered a stroke persisted and were later confirmed; there were also some erroneous reports that he had died. As weeks passed, his extended absence and the secrecy surrounding his health ignited a controversy over who was, or should be, leading the country, as the constitution stated that in the event that the president was incapacitated, the president of the Senate would serve as interim president while organizing new elections within 60 days. Even more controversy was generated by the manner in which the Constitutional Court addressed the question: in November the court itself amended the constitution to allow the vice president or prime minister to step in and temporarily handle the president’s duties, a move that was criticized by opposition leaders and others as being illegal and unconstitutional.

While Bongo was still recuperating abroad, a small group of soldiers staged a coup on January 7, 2019. It was quickly put down the same day, however, as it appeared that Bongo still had the support of the majority of the military.

In 2020 Gabon began the process of applying for membership in the Commonwealth association of countries. Gabon was formally admitted into the organization in June 2022.

Gabon’s next presidential and legislative elections were held on August 26, 2023. Bongo was one of 19 candidates approved to run for president. A little more than a week before the election, however, Alternance 2023—an alliance of six opposition parties—agreed to support one candidate, Albert Ondo Ossa, and withdrew their other presidential candidates in an attempt to avoid fragmenting the opposition vote. Before the results were released, there were already concerns about the credibility of the election and the lack of international observers. The results of the presidential election, announced on August 30, declared that Bongo had been reelected with about 64 percent of the vote, with his nearest competitor, Ondo Ossa, taking almost 31 percent. Soon after the announcement, a group of military officers who identified themselves as the Committee for Transition and Restoration of Institutions overthrew the government and canceled the election results. They claimed that the election had not been credible and that the country suffered from poor governance. Bongo was placed under house arrest, and all state institutions were dissolved. Later that same day, Gen. Brice Clotaire Oligui Nguema, a relative of Bongo, was named president of the committee; he was sworn in as the transitional president of the country on September 4. A few days later, Raymond Ndong Sima was named interim prime minister.