Guiana (now Guyana) - Passport & Nationality - Belize Citizenship by Birth
Person born in Belize, who was a citizen of the United Kingdom and Colonies (UKC). Citizen of the UKC, before September 21, 1981.
Birth within the territory of Belize, on or after September 21, 1981, regardless of the nationality of the parents. The exception is a child born to certain diplomatic personnel.