National Security Minister Stuart Young has announced the closure of all borders effective midnight on Sunday.
This, he said, has become necessary to stem the spread of the COVID-19 coronavirus.
He said no international flights would be allowed to enter the country.
This will apply to both nationals and non nationals.
Cargo vessels bringing food and pharmaceuticals into the country would to allowed entry.
Young was addressing the media at a press conference on Saturday.
He said, "The government has taken the decision that as of midnight tomorrow we will be closing our borders completely. We will continue to allow, under the restrictions we have currently, to come to Trinidad and Tobago."
Young said he has also been in contact with major energy companies over the last five days on the issue.