CIA - The World Factbook: British Indian Ocean Territory: Features map and brief descriptions of the geography, people, government, economy, communications, transportation, military and transnational issues.
Ethnologue - Languages of British Indian Ocean Territory: Information about the living languages of the country including population, region, classification, dialects and alternate names.
EUROPA - Development: EU Relations with British Indian Ocean Territory: EU provides a country overview, country strategy, priorities for co-operation, major development projects and financial data.
Swiss Committee in Favour of the Chagossians: Helping the native inhabitants of the Chagos Archipelago. Includes information about the islands, the Chagossians, the social committee and the refugees group.
UK Foreign Office - Country Profiles: British Indian Ocean Territory: Overview of country's geography, history, politics, economy, international relations, travel and current affairs.
Wikipedia - British Indian Ocean Territory: Hyperlinked encyclopedia article covers the country's history, government and politics, economy, geography and communications.
World Statesmen - British Indian Ocean Territory: Review of the country's history, politics, leaders and international organizations and treaties. Includes map, constitution, national anthem and pictures of historical flags.