Flag: Diego Garcia Emoji

The flag of Diego Garcia, a coral atoll in the central Indian Ocean that functions almost entirely as a joint UK-US military base. It shares its flag with the broader British Indian Ocean Territory: a Blue Ensign with the Union Jack in the canton, seven wavy white lines for the ocean, a palm tree rising above a crown on the fly. 1:2 ratio, adopted 8 November 1990.

Diego Garcia itself is the largest island of the Chagos Archipelago. Roughly 30 km² of land, a lagoon 21 km long, a maximum elevation of 9 metres above sea level, and a permanent population of about 4,239 that is almost entirely American and British military personnel and their contractors. The civilian Chagossian population, around 1,000 to 1,500 people, was forcibly removed between 1968 and 1973 so the base could be built. None have been permitted to return to Diego Garcia itself.

The emoji is the regional indicator sequence U+1F1E9U+1F1E9 + U+1F1ECU+1F1EC. Unlike most flag emojis, the letters DG are not an ISO 3166-1 country code; Diego Garcia doesn't have one. It uses the CLDR "exceptional reservation" code DG, and support is patchy. Most platforms render it; some fall back to showing the letters DG. Added to CLDR as one of the last flag emojis to gain broad support.

Because so few people live there and the civilian side is off-limits to tourism, 🇩🇬 is one of the rarest flag emojis on social media. It shows up mostly around geopolitics and military news. The October 2024 Chagos sovereignty announcement, the 22 May 2025 UK-Mauritius treaty, the April 2026 US ratification freeze, and the March 2026 Iran missile strike on the base each drove rare 🇩🇬 spikes.

🇩🇬 is not a social flag in the usual sense. Nobody's posting Diego Garcia vacation content, because Diego Garcia has no tourists. The flag shows up in four narrow contexts.

Geopolitics and sovereignty debate. The Chagossian displacement has been litigated for decades, and the 2019 ICJ advisory opinion ruling that the UK should end its administration drove the first real wave of 🇩🇬 use on X, mostly by international-law accounts and Mauritian voices. The October 2024 sovereignty announcement and May 2025 treaty each produced sharp spikes on news Twitter.

Military and defense commentary. Open-source intelligence accounts, naval analysts, and USAF watchers post 🇩🇬 when something unusual happens at the base. B-2 bomber deployments (2024, 2025, 2026 Iran crisis), B-52 rotations, carrier group positioning, and the occasional leaked satellite image all produce micro-bursts.

Chagossian diaspora. Around 10,000 people of Chagossian descent live in Mauritius, the Seychelles, and Crawley (UK). Chagossian activist accounts use 🇩🇬 alongside 🇲🇺 and 🇬🇧 to mark solidarity posts, court decisions, and the 2025 Île du Coin return attempt.

Weather and tropical geography. A small community of weather enthusiasts posts 🇩🇬 around Indian Ocean cyclone tracks, because Diego Garcia's weather station is one of the few monitoring stations in that stretch of ocean.

• 🏝️
  Capital: None. Base HQ at Camp Justice (7.31°S, 72.41°E)
• 👥
  Population: ~4,239 (2025), almost all military personnel and contractors
• 🚫
  Civilian residents: Zero. Chagossians displaced 1968 to 1973
• 🗺️
  Area: 30 km² land, 174 km² including lagoon
• 💵
  Currency: US dollar (de facto); GBP officially
• 🗣️
  Language: English (military); Chagossian Creole historically
• 📞
  Calling code: +246 (BIOT)
• ⏰
  Time zone: UTC+6, no DST
• 🌐
  Internet TLD: .io
• 📏
  Max elevation: ~9 metres above sea level

Places on the atoll

Diego Garcia's flag is really BIOT's flag: a Blue Ensign defaced with the territory's badge on the fly. The BIOT flag was first unfurled on 8 November 1990, initially as the Commissioner's personal flag rather than a territorial one. It slid into semi-official land use through the 1990s and 2000s, and by 2006 it was documented flying at the base itself.

The design packs three statements into one small rectangle. The Union Jack in the canton marks British sovereignty. The seven white wavy stripes on a blue field represent the waters of the Indian Ocean, a direct geographic signal that this territory is ocean-defined rather than land-defined. The palm tree is tropical-territory shorthand used across many UK overseas badges. The Tudor Crown (which replaced the St Edward's Crown in 2026 after King Charles III's coronation standardized the Tudor on British royal symbols) marks royal authority.

The territory the flag represents has a more troubled history than the flag itself. The UK purchased the Chagos Archipelago from Mauritius in 1965 for £3 million as part of the independence negotiations, carved it out as BIOT, and signed a 50-year agreement with the United States in 1966 to make Diego Garcia available for defense. Between 1968 and 1973, the entire civilian population, Chagossians descended from enslaved Africans and indentured Indian labourers brought by French and British planters, was forcibly removed so the base could be built. They were taken to Mauritius and Seychelles with little notice and no resettlement plan. Their dogs were killed in the Pontoon Massacre at Diego Garcia, a detail that appears in nearly every account.

Half a century of litigation followed. The Mauritian legal case reached the International Court of Justice, which issued an advisory opinion in February 2019 finding that the UK's continued administration was unlawful and the archipelago should be returned to Mauritius. The UN General Assembly voted 116 to 6 in support.

On 3 October 2024, the UK and Mauritius announced a deal: full sovereignty over the Chagos Archipelago would transfer to Mauritius, while Diego Garcia would be leased back to the UK for 99 years (renewable for 40 more) to maintain the joint UK-US base. The treaty was signed on 22 May 2025. In April 2026, ratification was suspended after opposition from US President Donald Trump's administration, and the Chagossian return question remains unresolved.

• •Diego Garcia's maximum elevation is about 9 metres above sea level. The atoll is essentially a thin coral rim around a lagoon, and one-metre sea-level rise would swamp a large share of it.
• •The island's nickname among US personnel is the "Footprint of Freedom," partly because the atoll's aerial outline looks like a footprint. The base runway is 3,658 metres long, built to take B-52 and B-2 bombers.
• •Between 1968 and 1973, approximately 1,000 to 1,500 Chagossians were forcibly removed. The Pontoon Massacre, in which British administrators killed the islanders' dogs in a pen on the dock to force compliance, is the incident most often cited in Chagossian testimony.
• •The island has no indigenous plants, birds, or mammals. Every coconut palm, every rat, every feral cat arrived with ships. The flag's palm tree is imported biota.
• •The internet TLD .io.io, which technically belongs to BIOT (and thus Diego Garcia), has become a favourite of tech startups. ICANN has been debating what will happen to .io.io after the Mauritius handover.
• •Diego Garcia sits on UTC+6 year-round with no daylight saving. It's five hours ahead of London and nine hours ahead of Washington, DC.
• •The 22 May 2025 UK-Mauritius treaty leases Diego Garcia back to the UK for 99 years with an option to extend another 40. If the option is exercised, the lease runs to 2164.