• U.S. Elections
• UFO Sightings
• Ultimate Flying Disc
• Undecided Voters
• Unemployment
• Unemployment
• Unemployment Benefits
• Uneven Bars Gymnastics
• Unexplained Phenomena
• Unexplained Phenomena
• Unificationism
• Unions
• Unions
• Unique Identifiers (information science)
• Upper House
• Upstream Oil and Gas Activities