As of September 2024, Vietnam maintains diplomatic relationships with 191 UN member states, State of Palestine and Sahrawi Arab Democratic Republic. In 2011 the Central Committee of the Communist Party of Vietnam, at the 11th National Congress of the Communist Party of Vietnam, released an official statement about Vietnam's foreign policy and a section of the statement stated: "Vietnam is a friend and reliable partner of all countries in the international community, actively taking part in international and regional cooperation processes. Deepen, stabilize and sustain established international relations. Develop relations with countries and territories in the world, as well as international organizations, while showing: respect for each other's independence; sovereignty and territorial integrity; non-interference in each other's international affairs; non-use or threat of force; settlement of disagreements and disputes by means of peaceful negotiations; mutual respect, equality and mutual benefit."
The Taipei Economic and Cultural Representative Office (TECRO), also known as Taipei Economic and Cultural Office (TECO), Taipei Representative Office (TRO) or Taipei Mission, is an alternative diplomatic institution serving as a de facto embassy or a consulate of the Republic of China to exercise the foreign affairs and consular services in specific countries which have established formal diplomatic relations with the People's Republic of China. The PRC denies the legitimacy of the ROC as a sovereign state and claims the ROC-controlled territories as an integral part of its territory. An exclusive mandate, namely One-China policy, requires that any country wishing to establish a diplomatic relationship with the PRC must first sever any formal relationship with the ROC. According to The Fletcher Forum of World Affairs, "non-recognition of the Taiwanese government is a prerequisite for conducting formal diplomatic relations with the PRC—in effect forcing other governments to choose between Beijing and Taipei." As a result, these countries only allow the ROC to establish representative offices instead of a fully-fledged embassy or consulate for the purpose of conducting practical bilateral relations without granting full diplomatic recognition.
A de facto embassy is an office or organisation that serves de facto as an embassy in the absence of normal or official diplomatic relations among countries, usually to represent nations which lack full diplomatic recognition, regions or dependencies of countries, or territories over which sovereignty is disputed. In some cases, diplomatic immunity and extraterritoriality may be granted.
Taiwan–Vietnam relations are conducted on an unofficial level, as Hanoi adheres to a one-China policy and officially recognises the People's Republic of China only and considers Taiwan to be an "inseparable part" of China's territory. However, this has not stopped bilateral visits, immigration and investment capital between Taiwan and Vietnam. Taiwan has been the fourth largest source of foreign direct investment in Vietnam since 2006. Both countries maintain representative offices; Taiwan is represented by the Taipei Economic and Cultural Office in Hanoi and Ho Chi Minh City (Saigón), while Vietnam is represented by the Vietnam Economic and Cultural Office in Taipei, both acting as de facto embassies. Vietnam is, to date, the only communist state to have informal relations with Taiwan.
The Embassy of the Republic of China in the Kingdom of Eswatini is the embassy of the Republic of China in Mbabane, Eswatini. The two countries have had diplomatic relations since Eswatini's independence in 1968.
The Taipei Economic and Cultural Office in Thailand is the representative office of Taiwan in Thailand, which functions as a de facto embassy in the absence of diplomatic relations.
The Taipei Economic and Cultural Representative Office in the United States represents the interests of Taiwan in the United States in the absence of formal diplomatic relations, functioning as a de facto embassy. Its counterpart in Taiwan is the office of the American Institute in Taiwan (AIT) in Taipei.
The Taipei Liaison Office in the Republic of South Africa represents the interests of Taiwan in South Africa in the absence of formal diplomatic relations, functioning as a de facto embassy. Its counterpart in Taiwan is the Liaison Office of the Republic of South Africa in Taipei. It has two offices, one in Pretoria and the other in Cape Town.
The Vietnam Economic and Cultural Office in Taipei is the representative office of Vietnam in Taiwan, which functions as a de facto embassy in the absence of diplomatic relations. Its counterpart body in Vietnam is the Taipei Economic and Cultural Office in Vietnam based in Hanoi.
The Taipei Economic and Cultural Office in Brazil represents the interests of Taiwan in Brazil in the absence of formal diplomatic relations, functioning as a de facto embassy. Its counterpart in Taiwan is the Commercial Office of Brazil to Taipei in Taipei.
The Taipei Commercial and Cultural Office in Argentina; represents the interests of Taiwan in Argentina in the absence of formal diplomatic relations, functioning as a de facto embassy.
The Taipei Economic and Cultural Centre; represents the interests of Taiwan in Portugal in the absence of formal diplomatic relations, functioning as a de facto embassy.
The Taipei Economic and Cultural Center in India is the representative office of Taiwan in India, functioning as a de facto embassy in the absence of diplomatic relations. It was established in 1995. It is headed by a Representative, currently Baushuan Ger.
The Taipei Economic and Cultural Office, Ho Chi Minh City represents the interests of Taiwan in the southern regions of Vietnam and Cambodia, functioning as a de facto consulate in the absence of diplomatic relations. There is also a Taipei Economic and Cultural Office in Vietnam located in Hanoi, which has responsibility for relations with the northern regions of Vietnam as well as Laos.
The Taipei Commercial Office in Bogotá, Colombia represents the interests of Taiwan in Colombia in the absence of formal diplomatic relations, functioning as a de facto embassy.
The Taipei Economic and Cultural Representative Office in the Kingdom of Saudi Arabia; represents the interests of the Republic of China (Taiwan) in Saudi Arabia in the absence of formal diplomatic relations, functioning as a de facto embassy. In addition, it has responsibility for Taiwan's relations with Afghanistan, Djibouti, Ethiopia, Pakistan, Qatar and Sudan.
New Zealand–Vietnam relations refers to the relations between New Zealand and Vietnam. New Zealand has an embassy in Hanoi and a consulate-general in Ho Chi Minh City. Vietnam has an embassy in Wellington.
Vietnam (excluding southern regions) 
Laos 