Trinidad and Tobago, officially the Republic of Trinidad and Tobago, is a twin island country situated off the northern edge of the South American mainland, 11 kilometres (6.8 miles) off the coast of northeastern Venezuela and 130 kilometres (81 miles) south of Grenada. Trinidad and Tobago is one of the wealthiest and most developed nations in the Caribbean and is listed in the top 40 (2010 information) of the 70 High Income countries in the world. Its GNI per capita of US$20,070^[1] (2014 GNI at Atlas Method) is one of the highest in the Caribbean.^[2] In November 2011, the OECD removed Trinidad and Tobago from its list of Developing Countries.^[3] Trinidad's economy is strongly influenced by the petroleum industry. Tourism and manufacturing are also important to the local economy. Tourism is a growing sector, although not as proportionately important as in many other Caribbean islands. Agricultural products include citrus and cocoa.

This list includes notable companies with primary headquarters located in the country. The industry and sector follow the Industry Classification Benchmark taxonomy. Organizations which have ceased operations are included and noted as defunct.

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  The oil refinery at Pointe-à-Pierre
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  Tobago Express Dash 8-300 at Robinson International in Tobago
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  Carib Brewery on Trinidad

• Economy of Trinidad and Tobago
• List of airlines of Trinidad and Tobago