- (the) United Arab Emirates (UAE)
- the United Free Church
- the United Kingdom
- the United Nations
- the United Nations Security Council
- the United Nations Security Council
- the United States
- the United States of America
- the United States (of America)
- the university of life
- the Unknown Soldier
- the UN Security Council
- the unthinkable
- the upper class
- the upper classes
- the upper crust
- the upshot
- (the) US
- (the) USA
- the usual run
- the usual run of
- the vanguard
- the vanquished
- the Vatican
- the Vatican City