Is there a list of all the companies in the United States?

There is not a list of all the companies in the United States, because such a list would be extraordinarily long. However, Wikipedia provides a list of notable companies in the United States, ranging from restaurants and retailers to social media networks and investment firms.

The largest company in the United States by market capitalization as of July 2015 is the technology company Apple, reports iWeblists. The next two biggest companies, Google and Microsoft, are also technology companies. The next five biggest companies are Berkshire Hathaway, Exxon Mobil, Wells Fargo, Johnson & Johnson and Facebook. General Electric and JPMorgan Chase complete the top 10.