Categories

The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.

• UFO crashes‏‎ (2 members)
• UFO hoaxes‏‎ (1 member)
• UFO researchers‏‎ (1 member)
• UFO sightings‏‎ (1 member)
• UFO sightings in Brazil‏‎ (1 member)
• UFO sightings in the United States‏‎ (1 member)
• Ufology‏‎ (14 members)
• Unconventional energy sources‏‎ (1 member)
• United States Air Force bases‏‎ (1 member)
• United States Army personnel of World War II‏‎ (1 member)
• United States Navy‏‎ (1 member)
• United States Navy personnel of the Vietnam War‏‎ (1 member)
• United States Navy sailors‏‎ (1 member)
• United States and the Antarctic‏‎ (1 member)
• Unprintworthy redirects‏‎ (1 member)
• Unsolved problems in astronomy‏‎ (1 member)
• Unsolved problems in biology‏‎ (1 member)
• Use American English from July 2022‏‎ (1 member)
• Use British English from June 2023‏‎ (1 member)
• Use dmy dates from February 2020‏‎ (1 member)
• Use dmy dates from July 2018‏‎ (1 member)
• Use dmy dates from June 2024‏‎ (1 member)
• Use dmy dates from October 2019‏‎ (1 member)
• Use dmy dates from October 2023‏‎ (1 member)
• Use dmy dates from September 2019‏‎ (2 members)
• Use mdy dates from January 2024‏‎ (1 member)
• Use mdy dates from November 2024‏‎ (1 member)
• Use mdy dates from October 2014‏‎ (1 member)
• Use mdy dates from September 2022‏‎ (2 members)
• Vague or ambiguous time from August 2013‏‎ (1 member)
• Vague or ambiguous time from February 2019‏‎ (1 member)
• Webarchive template archiveis links‏‎ (1 member)
• Webarchive template wayback links‏‎ (5 members)
• Whistleblowers‏‎ (1 member)
• Wikipedia administration templates‏‎ (1 member)
• Wikipedia articles in need of updating from April 2024‏‎ (1 member)
• Wikipedia articles incorporating text from the Air Force Historical Research Agency‏‎ (1 member)
• Wikipedia articles needing page number citations from November 2018‏‎ (1 member)
• Wikipedia articles needing page number citations from November 2020‏‎ (1 member)
• Wikipedia authority control‏‎ (1 member)
• Wikipedia dispute resolution‏‎ (1 member)
• Wikipedia formatting templates‏‎ (1 member)
• Wikipedia help templates‏‎ (1 member)
• Wikipedia non-free files with NFUR stated‏‎ (3 members)
• Wikipedia non-free files with valid backlink‏‎ (2 members)
• Wikipedia pages with incorrect protection templates‏‎ (1 member)
• Wiktionary link templates‏‎ (1 member)
• World War II airfields in the United States‏‎ (1 member)
• Writers from Long Beach, California‏‎ (1 member)
• Writers from Tacoma, Washington‏‎ (1 member)