Thir - tpke
- Third Amendment
- third base
- third baseman
- third class mail
- third degree
- third house
- Third Market
- Third Mesa
- third party
- Third Regiment
- Third United States Army
- third-term tradition
- Thirteen Colonies
- Thirteenth Amendment
- thirty day wash rule
- Thirty-Fourth Street
- thirty-year fixed rate mortgage
- This Is My West Virginia
- This Land Is Your Land
- Thom, Melvin D.
- Thomas A. Edison Memorial Bridge
- Thomas E. Dewey Thruway
- Thomas Edison State College
- Thomas Elfe House
- Thomas Jefferson Memorial
- Thomas Jefferson's Birthday
- Thomas' English muffins
- Thomas, Clarence
- Thomas, George Henry
- Thomas, Isaiah
- Thomas, Lewis
- Thomas, Lowell Jackson
- Thomas, Martha Carey
- Thomas, Michael Tilson
- Thomas, Norman Mattoon
- Thomas, Ross
- Thomas, Seth
- Thomas, Theodore
- Thompson submachine gun
- Thompson, David
