The Liberal Party of Honduras (Spanish: Partido Liberal de Honduras) is a centrist liberal political party in Honduras that was founded in 1891. It is the oldest existent political party in the country; further, it is one of the two main parties that have, until recently, dominated Honduran politics. The party is a member of the Liberal International. The PLH is identified with the colors red and white, as the flag Francisco Morazán used in most of his military campaigns during the time of the Central American Federal Republic.

The party is against the legalization of abortion, which is punishable by imprisonment in Honduras.

The Liberal Party emerged from the political and economic rivalries that dominated Honduras during the 19th century. The country’s liberal and conservative factions were less ideologically distinct than their labels suggest; instead, they were vehicles for elites competing for control over limited state resources. Early Honduran elections were marked by frequent outbreaks of violence, with defeated factions often resorting to armed conflict. These struggles hindered economic development, as governmental resources were frequently diverted to fund military campaigns and settle wartime debts. By the early 20th century, the Liberal Party had become firmly entrenched as one of the two main political parties, alongside the newly formed National Party of Honduras, a splinter group created by dissatisfied PLH members. The bipartite political system took shape during this period, with both parties backed by foreign interests, particularly the powerful American-owned banana companies that dominated the Honduran economy. While these companies initially supported both parties, a merger in 1929 resulted in the PNH securing a greater share of their financial backing, giving the PNH an advantage during this critical period.

The rise of General Tiburcio Carías Andino and his establishment of a civilian dictatorship, colloquially referred to as the "Cariato," marked a significant setback for democratic politics in Honduras. The PLH, with David Masso Hernández as its top leader, declared itself a party of the Democratic Left in 1932, thus maintaining its ideology of social liberalism or center-left until the end of the 20th century. Carías, a member of the PNH, ruled with an iron grip from 1932 to 1949, suppressing political opposition and stifling the PLH. Many Liberal leaders were forced into exile, but despite this, the party survived.

When the “Cariato” ended, the PLH returned to the electoral arena with an ascendant liberal faction. The PLH won at the 1954 Honduran general election, but a political deadlock resulted in a crisis culminating in a coup. The Liberal presidential candidate and winner of the 1954 elections, Ramón Villeda Morales, was finally made president in 1957, but his administration ended prematurely due to the 1963 Honduran coup d'état.

Military supremacy over politics was consolidated after the 1963 coup, and military officers occupied the presidency save for the brief civilian administration of Ramón Ernesto Cruz Uclés of the PNH, during 1971–1972. Despite the military dictatorship, the Liberal party or its leaders were not outright banned. The party, along with the National Party and the United States began putting pressure on the military to begin a transition back to civilian administration, which was finally realized in 1982.

The PLH won the closely contested 2005 presidential race, but at the moment^[update] the PNH has a majority in the National Congress due to an alliance with the Christian Democrats (Democracia Cristiana).

In the general election of 27 November 2005, the party won 62 out of 128 seats in the National Congress; and its presidential candidate, Manuel Zelaya, polled 49.9% to defeat the PNH's Porfirio Pepe Lobo, restoring the PLH as the presidential party. He was inaugurated on 27 January 2006.