Antigua & Barbuda and Belize are two of fifteencommonwealth realms, members of: the Association of Caribbean States, the Caribbean Community, the Caribbean Development Bank, the Commonwealth of Nations, ECLAC, EU-CARIFORUM, the Organisation of African, Caribbean and Pacific States, the Organization of American States, and the United Nations. Both countries established diplomatic relations on 4 February 1983.^[43]

Antigua & Barbuda and Canada are two of fifteencommonwealth realms, members of: the Commonwealth of Nations, the Organization of American States, and the United Nations. Both countries established diplomatic relations in 1967.^[44][45]

• Antigua and Barbuda is accredited to Canada from its embassy in Washington, D.C., United States and has a consulate-general in Toronto.
• The Canadian High Commission in Bridgetown, Barbados is accredited to Antigua and Barbuda.^[46]

Both countries have established diplomatic relations.^[47]

Denmark is represented in Antigua and Barbuda by its Consulate General inNew York and an honorary consulate inSt. John's, Antigua and Barbuda.^[48]

Both countries have established diplomatic relations and have an Extradition Arrangement.^[49][50]

Ireland is represented in Antigua and Barbuda through its embassy inWashington DC,United States.^[51][52]

Israel is represented in Antigua and Barbuda through its embassy in Dominican Republic.^[53]

• Both countries established diplomatic relations on 23 July 2004.^[54]
• Both countries are full members ofCommonwealth of Nations.

• Antigua and Barbuda has a non-resident ambassador accredited to Mexico from its capital inSt. John's.^[55]
• Mexico is accredited to Antigua and Barbuda from its embassy inCastries,Saint Lucia and maintains an honorary consulate in St. John's.^[56]

The establishment of diplomatic relations between theRepublic of Korea (South Korea) and Antigua and Barbuda began on 1 November 1981.^[57]

• Turkish Embassy inSanto Domingo is accredited toAntigua and Barbuda.^[58]
• Trade volume between the two countries was 12.5 million USD in 2019.^[58]

Both countries have established diplomatic relations.Both countries are full members ofCommonwealth of Nations.

Relations between Antigua and Barbuda and the United States have been friendly since Antigua and Barbuda's independence from the United Kingdom in 1981.

The United States has supported the Government of Antigua and Barbuda's effort to expand its economic base and to improve its citizens' standard of living. However, concerns over the lack of adequate regulation of thefinancial services sector prompted the US Government to issue afinancial advisory for Antigua and Barbuda in 1999. The advisory was lifted in 2001, but the US Government continues to monitor the Government of Antigua and Barbuda's regulation of financial services.

The United States also has been active in supporting post-hurricane disaster assistance and rehabilitation through theUS Agency for International Development's (USAID) Office of Foreign Disaster Assistance and thePeace Corps. US assistance is primarily channelled through multilateral agencies such as theWorld Bank and theCaribbean Development Bank (CDB), as well as through the USAID office inBridgetown, Barbados.

Antigua and Barbuda is strategically situated in theLeeward Islands nearmaritime transport lanes of major importance to the United States. Antigua has long hosted a US military presence. A formerUS Navy support facility, turned over to the Government of Antigua and Barbuda in 1995, is now being developed as a regionalcoast guard training facility.

Antigua and Barbuda's location close to theUS Virgin Islands andPuerto Rico makes it an attractive transshipment point for narcotics traffickers. To address these problems, the United States and Antigua and Barbuda have signed a series of counter-narcotic and counter-crime treaties and agreements, including a maritime law enforcement agreement (1995), subsequently amended to include overflight and order-to-land provisions (1996); a bilateralextradition treaty (1996); and amutual legal assistance treaty (1996). In addition, Antigua and Barbuda receives counter-narcotics assistance and benefits from US military exercise-related and humanitarian civic assistance construction projects.

In 2005, Antigua and Barbuda had 239,804 stay-over visitors, with nearly 28% of Antigua and Barbuda's visitors coming from the United States. It is estimated that 4,500 Americans reside in the country.

In 2005 both countries disputed aWorld Trade Organization ruling over gambling law. In 2007 relations were strained when Antigua and Barbuda demanded sanctions worth $3.4bn imposed on the US for its failure to obey the WTO gambling ruling stating that "while we realise this is a significant step for Antigua and Barbuda to take, we feel we have no choice in the matter".^[59] Nevertheless, relations between the two countries are still strong.

Antigua and Barbuda enjoys close relations withVenezuela. As of June 2009 it became a formal member of theBolivarian Alliance for the Americas (ALBA) international co-operation organisation and the Caribbean oil alliancePetrocaribe. In 2009 Antigua and Barbuda received US$50 million from Venezuela because of the country's membership of these initiatives.

"We have benefited from these relationships and so we will continue to forge these alliances, whether it is with Venezuela, Cuba or whoever else that we feel is in the interest of Antigua and Barbuda and the sub-region," said the Prime Minister of Antigua and BarbudaBaldwin Spencer.^[60]