EUROPA - Development: EU Relations with Tonga
- EU provides a country overview, country strategy, priorities for co-operation, major development projects and financial data.
- http://ec.europa.eu/development/Geographical/RegionsCountries/Countries/Tonga.htm

World Trade Organization - Accession Status: Tonga
- WTO provides news, trade statistics, documents and the status of the working party.
- http://www.wto.org/english/thewto_e/acc_e/a1_tonga_e.htm

World Bank Group - Pacific Islands
- Provides news and events and in-depth analysis with a regional overview, country briefs, data and statistics, publications, development topics, initiatives, projects and programs. Includes Fiji, Micronesia, Kiribati, the Marshall Islands, Palau, the Solom
- http://www.worldbank.org/pi/

US Energy Information Administration - Tonga
- US EIA provides data, forecasts, country analysis brief and other analyses, focusing on the energy industry including oil, natural gas and electricity.
- http://www.eia.doe.gov/emeu/international/tonga.html

UN Sustainable Development - Tonga
- Provides links to UN pages on aspects of natural resources, social, economic and institutional aspects of sustainable development.
- http://www.un.org/esa/agenda21/natlinfo/countr/tonga/index.htm

UN FAO - Country Profiles and Mapping Information System: Tonga
- Provides information about the UN's food and agriculture activities, areas of intervention, newsroom, publications, country information, related sites and contacts.
- http://www.fao.org/countryprofiles/index.asp?lang=en&iso3=TON

IMF - Tonga and the IMF
- Provides news, statistics, Public Information Notices and other reports, financial position in the Fund and transactions.
- http://www.imf.org/external/country/TON/

IFAD in Tonga
- Information about closed and ongoing projects including type, cost and loan amount. From the International Fund for Agricultural Development.
- http://www.ifad.org/english/operations/pi/ton/index.htm

Development Gateway - Tonga
- Foundation provides a portal for resources, activity database, project information, business opportunities, recent notices and publications. [English, French, Spanish]
- http://old.developmentgateway.org/countryprofile/index?country_iso=TO