A-Z index of U.S. government departments and agencies
Get contact information for U.S. federal government agencies, departments, instrumentalities, and government-sponsored enterprises. Find websites, email, phone numbers, addresses, and more.
T
The Tax Court decides disputes between the Internal Revenue Service and taxpayers.
Website:
Phone number:
1-202-521-0700
Contact:
The United States Trade and Development Agency (USTDA) links U.S. businesses to export opportunities by funding project planning activities, pilot projects, and reverse trade missions.
Website:
Phone number:
1-703-875-4357
The U.S. Trade Representative (USTR) negotiates with foreign governments to craft trade agreements and resolve disputes.
Website:
Phone number:
1-202-395-2870
The Department of Transportation (DOT) is responsible for planning and coordinating federal transportation projects. It also sets safety regulations for all major modes of transportation.
Website:
Phone number:
1-202-366-4000
Find an office near you:
The Transportation Security Administration (TSA) protects the nation's transportation systems to ensure freedom of movement for people and commerce.
The Bureau of Transportation Statistics (BTS) collects and publishes comprehensive transportation statistics.
Website:
The Department of the Treasury manages federal finances by collecting taxes and paying bills and by managing currency, government accounts and public debt. The Department of the Treasury also enforces finance and tax laws.
Website:
Phone number:
1-202-622-2000
The U.S. Trustee Program protects the integrity of the Federal bankruptcy system. The Program monitors the conduct of bankruptcy parties and private estate trustees. It also identifies and helps investigate bankruptcy fraud and abuse.
Website:
Phone number:
1-202-307-1391
Contact:
Have a question?
Ask a real person any government-related question for free. They will get you the answer or let you know where to find it.
Call USAGov
Chat with USAGov