The Top 25 Federal Government Contractors. Each of these Companies made in excess of $1Billion dollars working for the federal government. What does that mean? If you are a Small Business, it could mean large possibilities for sub-contracting with these large firms. The Federal government has required that these firms utilize small firms. So why not get your company involved. The list includes all the information you need to register with these top companies. This is not a Biography about each Company. It is intended to provide you the Small Business with the information you require to register with each of the listed firms. Their web links are included for you to research each firm for the best fit for your company. We have left space on the pages for your notes as you contact your selected firms.