T&T is among some 13 countries publicly backing Sebastian Coe's campaign to become the president of the International Association of Athletics Federations (IAAF).
Twelve of the Federations to have come out in support of Britain's double Olympic 1500 metres champion are from the North American, Central America and Caribbean Athletics Association (NACAC).
Coe had visited the NACAC Championships in Costa Rica's capital San José last weekend, along with Sergey Bubka, his rival from Ukraine.
Apart from T&T, the countries backing him are Antigua and Barbuda, Bahamas, Barbados, Bermuda, British Virgin Islands, Cayman Islands, Grenada, Puerto Rico, St Vincent and Grenadines, Turks and Caicos and US Virgin Islands.
They join Canada and Jamaica, members of the NACAC who had already publicly backed Coe ahead of the election to replace Senegal's Lamine Diack, who is stepping down after 16 years, at the IAAF Congress in Beijing on Wednesday.
Several other of the NACAC's 31 members are also expected to vote for Coe, including the United States, who have already revealed they will not say publicly who they are supporting.
Greece have also joined the growing number of European countries supporting Coe.
Ghana became the first country from Africa to publicly promise to vote for Coe, while Peru, Paraguay, Singapore and Thailand had pledged their support for Bubka, the 1988 Olympic pole vault champion.
It takes to 36 the number of countries who have publicly endorsed Coe, compared to five for Bubka.