Totality may refer to:

• In astronomy, the state or period of an eclipse when light from the eclipsed body is totally obscured:
  • The coverage of the sun during a solar eclipse
  • The period during which an eclipse is total
• In philosophy, the concepts of:
  • Absolute (philosophy) and everything
  • A phenomenon discussed in Totality and Infinity by Emmanuel Levinas
  • The concept of totality as proposed by György Lukács
• In politics, totalitarianism is sometimes referred to as regime of totality
• Totality Corporation, a former professional services provider acquired by Verizon
• Totality principle, a principle of common law re the sentencing of an offender for multiple offences
• Plan Totality, a U.S. wartime contingency plan from the early Cold War period
• The "Totality", a fictional alien entity in the Star Trek universe
• The mathematical concept of a function being total vs. partial
• Totality (album)