List of Texas companies

The region's second-quarter 2018 gross state product was 8.6% of the GDP of the country at $1.755 trillion, with significant growth in mining, quarrying, and oil and gas extraction.

[1] The state ranked third on Forbes list of Best States For Business in 2018, noting strong growth, employment and income and a primary target for corporate relocations over the last six years.

[2] This list shows firms in the Fortune 500, which ranks firms by total revenues reported before January 31, 2018.

This list includes notable companies with primary headquarters located in the state.

Organizations which have ceased operations are included and noted as defunct.