[1][2] Both nations are a part of CARICOM, a political union of Caribbean countries.

The two nations share many similarities with each other due to their similar culture, linguistic usage, religions and both being a part of the British Empire at some point in their history.

In the 1970s, Trinidad and Tobago continued to provide petroleum to Guyana on credit despite their economic shortfall.

In the 1990s, under the Paris Club Agreement, Trinidad and Tobago forgave hundred of millions of US Dollars worth of debt that Guyana owed.

[3] In 2017, Guyana opened its first diplomatic mission to Trinidad and Tobago.