The Timorese Popular Democratic Association (Portuguese: Associação Popular Democrática Timorense, APODETI; Indonesian: Asosiasi Demokratik Rakyat Timor) was a political party in East Timor established in 1974, which advocated for integration into Indonesia. Along with another East Timor party, the Timorese Democratic Union (UDT), it signed the Balibo Declaration in 1975 calling for Indonesia to annex the region. The party led the Provisional Government of East Timor that was formed following the Indonesian invasion of East Timor later that year. Since 2000, the party used the suffix Pro-Referendo (Pro-referendum). A renaming to Partido Democrata Liberal was considered. The party is said to have been dissolved.

East Timor was a Portuguese colony for several hundred years. When the Carnation Revolution toppled the Lisbon regime in 1974, East Timor entered a period of instability. One of the first changes was the legalization of political parties. Along with the Timorese Democratic Union and Fretilin, APODETI was founded quickly after the announcement. Party leaders believed East Timor would not have been a viable independent state.

On 27 May 1974, a group of thirty individuals met to create a party to advocate for integration into Indonesia. The party's first name was the Associação para a Integração de Timor na Indonésia (lit. 'Association for the Integration of Timor into Indonesia', AITI), but organizers decided the pro-integration position was unpopular and decided to remove the word from their name. Among them were several former participants in the Viqueque Rebellion (1959).

In its original manifesto, the party called for "autonomous integration" into Indonesia while also declaring support for human rights and freedom of expression. The party also advocated the teaching of Indonesian in East Timor's schools. The party supported religious freedom and opposed racism, but initially opposed the Catholic Church and took anti-white positions. APODETI only found support from a few Liurai in the border region. Some of them had collaborated with the Japanese against the Portuguese colonial rulers during World War II. A large part of the small Muslim minority in East Timor also supported the APODETI.

APODETI used to be seen as a front organization funded by Jakarta. Its prominent leaders have had close contact with Indonesian secret agents since the 1960s. For support and funding from Indonesia, they used their position in society as traders, customs officials, and influential traditional leaders. APODETI's first president was Arnaldo dos Reis Araújo [id], a 60-year-old cattle farmer who had collaborated with the Japanese invasion forces during World War II. Araujo spent several months in Jakarta during 1974, where he met government officials who quickly found ways to support his organization. Later, he became the first governor of East Timor under Indonesian rule. The first vice-president of the party was Hermenegildo Martins, owner of a coffee plantation. Another key APODETI leader was a former schoolteacher named José Abílio Osório Soares. Echoing the sentiment that East Timor could not survive as an independent state, he professed a strong faith in Indonesia's willingness to help. In 1975 he said: "We do not need neocolonialism, just some control from Indonesia; and if we need some things maybe we can get them from Indonesia."

The popularity of APODETI was low compared to the pro-independence Fretilin and even the more moderate UDT. Still, it received considerable support from the Indonesian government, in the form of financial donations and declarations of solidarity. When APODETI leaders announced that 70 percent of the population endorsed integration, Indonesian officials repeated the claim and it became a staple of media reports in Jakarta. Their strongest supporter was Dom Guilherme Gonçalves, the Liurai of the former Atsabe Kingdom from Atsabe/Ermera Municipality and head of the Atsabe Kemak. He had strong family ties within the former kingdom and its old allies. This included ties to Kemak in what are now the municipalities of Ainaro and Bobonaro and northern and southern Tetum and Bunak on both sides of the borders. He was extremely anti-Portuguese and had a large traditional army. Gonçalves came from a long line of kings who regularly rebelled against the Portuguese. He hated the artificial colonial border that divided his family and separated the east from the Laran spiritual center in Wehale. That is why he wanted a reunification of Timor. At the same time, party leaders were ridiculed in East Timor, and some traveled accompanied by bodyguards. This, in turn, led to more belligerent statements by APODETI leaders.

APODETI was the first East Timorese party to establish paramilitary forces. In August 1974, it began training camps in Indonesian West Timor. Instructors and weapons came from the Indonesian military. Tomás Gonçalves, son of the Liurais of Atsabe, Guilherme Gonçalves and APODETI representative in West Timor, met the commander of the armed forces General Maraden Panggabean in Jakarta the following month. APODETI presented itself as a suitable vehicle for the integration of East Timor into Indonesia.

When FRETILIN proclaimed East Timor's independence from Portugal on November 28, 1975, Indonesia reacted by reporting that Dom Guilherme Gonçalves and Alexandrino Borromeo of APODETI and other opposition politicians had signed the so-called Balibo Declaration, which called for East Timor's annexation to Indonesia. The declaration was drafted by Indonesian intelligence and signed in Bali, not Balibo. After Indonesia's invasion, a puppet government was established in mid-December 1976, consisting of APODETI and UDT leaders. Arnaldo dos Reis Araújo became the first governor of Timor Timur, as East Timor was called under Indonesian rule. He was followed by Dom Guilherme Gonçalves and, after an interlude by UDT member Mário Viegas Carrascalão, finally the last was José Abílio Osório Soares, brother of José Fernando Osório Soares and former mayor of Dili.