Africa has more countries on the GREEN×EXPO 2027 participation list than any other region: 36, close to half of all participating countries. The list is published by the GREEN×EXPO Association (the public-interest incorporated association organising the 2027 International Horticultural Expo) and Japan’s Ministry of Foreign Affairs (MOFA). As of 2026-09-09, it included 74 countries and five international organisations.
The list is in gojuon (Japanese alphabetical) order. Following that order, we have split Africa’s 36 countries into two halves, and the first 18 run from Angola to Seychelles. The table below gives each country’s official participation contract status and the capital, population and languages from MOFA’s basic data. As of September 2026, 17 of these 18 countries have signed an official participation contract; only Uganda has not. Specific exhibit details have not been announced for any of the 18. Where a row says “Association announced” rather than “Signed on”, the Association has announced the signing but has not made the signing date public.
In an earlier news story, we also covered an announcement that participating countries gathered in Yokohama around TICAD9 (the Tokyo International Conference on African Development) in August 2025. The full list of participating countries is on our feature page, “Participating countries guide”.
Photos of each country are in five regional articles built on MOFA’s data about what each country grows and what Japan imports: four in North Africa, nine in West Africa, seven in Central Africa, seven in the northern part of East Africa and nine in the Indian Ocean islands and Southern Africa.
Country by country (1): Angola to Ghana
| Country | Official participation contract | Capital | Population | Languages |
|---|---|---|---|---|
| 1. Republic of Angola | Association announced 14 Aug 2026 (announcement); signing date not made public | Luanda | about 37.88 million (2024, World Bank) | Portuguese (official), Umbundu, among others |
| 2. Republic of Uganda | Not announced as of September 2026 | Kampala | about 50.02 million (2024, World Bank) | English, Swahili, Ganda, among others |
| 3. Arab Republic of Egypt | Signed 26 Feb 2026 (announcement) | Cairo | 116.53 million (2024, World Bank) | Arabic (English also widely used in urban areas) |
| 4. Kingdom of Eswatini | Signed 26 Feb 2026 (announcement) | Mbabane | about 1.24 million (2024, World Bank) | English, siSwati |
| 5. Federal Democratic Republic of Ethiopia | Signed 30 Jun 2026 (announcement) | Addis Ababa | about 132.06 million (2024, World Bank) | Amharic, Oromo, English, among others |
| 6. Republic of Ghana | Signed 27 May 2026 (announcement) | Accra | about 34.43 million (2024, World Bank) | English (official) and various local languages |

Country by country (2): Cameroon to Comoros
| Country | Official participation contract | Capital | Population | Languages |
|---|---|---|---|---|
| 7. Republic of Cameroon | Signed 29 May 2026 (announcement) | Yaoundé | 29.12 million (2024, World Bank) | French and English (both official) and various local languages |
| 8. Republic of The Gambia | Signed 14 Jan 2026 (announcement) | Banjul | about 2.76 million (2024, World Bank) | English (official), Mandinka, Wolof, among others |
| 9. Republic of Guinea | Signed 9 Jun 2026 (announcement) | Conakry | 14.75 million (2024, World Bank) | French and various local languages |
| 10. Republic of Kenya | Signed 21 Aug 2025 (announcement) | Nairobi | 56.43 million (2024, World Bank) | Swahili and English |
| 11. Republic of Côte d’Ivoire | Signed 21 Aug 2025 (announcement) | Yamoussoukro (Abidjan functions as the de facto capital) | 31.93 million (2024, World Bank) | French (official) and various local languages |
| 12. Union of the Comoros | Signed 30 Jun 2026 (announcement) | Moroni | about 860,000 (2024, World Bank) | French, Arabic and Comorian (all official) |

Country by country (3): Democratic Republic of the Congo to Seychelles
| Country | Official participation contract | Capital | Population | Languages |
|---|---|---|---|---|
| 13. Democratic Republic of the Congo | Signed 29 May 2026 (announcement) | Kinshasa | 109.28 million (2024, World Bank) | French (official), Lingala, Swahili, among others |
| 14. Democratic Republic of São Tomé and Príncipe | Signed 30 Jun 2026 (announcement) | São Tomé | 236,000 (2024, World Bank) | Portuguese |
| 15. Republic of Djibouti | Signed 5 Jun 2026 (announcement) | Djibouti | 1.17 million (2024, World Bank) | Arabic and French |
| 16. Republic of Zimbabwe | Signed 5 Jun 2026 (announcement) | Harare | 16.63 million (2024, World Bank) | English, Shona, Ndebele, among others (16 languages recognised under the constitution) |
| 17. Republic of the Sudan | Association announced 18 Jul 2025 (announcement); signing date not made public | Khartoum | 49.38 million (2023, World Bank) | Arabic (official; English also used) |
| 18. Republic of Seychelles | Signed 4 Jun 2026 (announcement) | Victoria (on Mahé) | about 120,000 (2022, World Bank) | English, French, Creole |
