The Embassy of Japan in Trinidad and Tobago covers 5 more neighboring countries, as well as regional organizations, including the Caribbean Community (CARICOM)

1. Countries in Our Jurisdiction
(1) Grenada
(2) Guyana (Co-operative Republic of Guyana)
(3) Saint Lucia (St. Lucia)
(4) Saint Vincent and the Grenadines (St. Vincent and Grenadines)
(5) Suriname (Republic of Suriname)
(6) Trinidad and Tobago

From April 2025, the Embassy of Japan in Barbados took over the operations for Antigua and Barbuda, Saint Kitts and Nevis, Dominca, which had been under the jurisdiction of the Embassy of Japan in Trinidad and Tobago. 

2. Regional Organizations
(1) CARICOM ,Japan-CARICOM Relations 
(2) ACS (Association of Caribbean States)
(3) OECS (Organisation of Eastern Caribbean States : Antigua and Barbuda, Dominica, Grenada, St. Kitts and Nevis, St. Lucia, St. Vincent and the Grenadines)

 3. Caribbean Embassies and Consulates in Japan
Latin American and the Caribbean Embassies and Consulates in Japan