Cancel, cancellation, or cancelled may refer to:

Business

Project cancellation A project is a type of assignment, typically involving research or design, that is carefully plan, planned to achieve a specific objective. An alternative view sees a project managerialism, managerially as a sequence of events: a "set of inter ...

, in government and industry * Cancellation (mail), a postal marking applied to a stamp or stationery indicating the item has been used * Cancellation (insurance), the termination of an insurance policy * Flight cancellation and delay, not operating a scheduled flight

Sociology

* Cancel culture, boycotting and ostracism calling out offensive behavior on social media or in real life

Technology and science

* Cancel leaf, a bibliographic term for replaced leaves in printed books * Cancellation property, the mathematical property if ''a''×''b'' = ''a''×''c'' then ''b'' = ''c'' ** Cancelling out, a technique for simplifying mathematical expressions * Catastrophic cancellation, numerical error arising from subtracting approximations to nearby numbers * Noise cancellation, a method for reducing unwanted sound * Phase cancellation, the effect of two waves that are out of phase with each other being summed * Cancel message, a special message used to remove Usenet articles posted to news servers * Cancel character, an indication that transmitted data are in error or are to be disregarded * Resolution rule, in propositional logic a valid inference rule that produces a new clause by two clauses containing complementary literals. *

Cancellable (linguistics) In the linguistic field of pragmatics, an inference is said to be defeasible or cancellable if it can be made to disappear by the addition of another statement, or an appropriate context. For example, sentence would normally implicate iby ...

, a property of implicatures and presuppositions

Entertainment

* Cancellation (television), the termination of a television series * "Cancelled" (''South Park''), a 2003 episode of the TV series ''South Park'' * "Canceled" (''Nikita''), a 2013 episode of ''Nikita'' * "Canceled" (song), a 2020 song by Larray * ''Cancelled'' (EP), a 2024 EP by Mötley Crüe * Canceled (film), a Swedish horror film

People and characters

* Robinson Cancel (born 1976), baseball catcher * Rafael Cancel Miranda (born 1930), political activist *An alternate name for the archangel Camael

Government

* Cancellation of removal, a form of immigration relief available to aliens in the United States who be otherwise inadmissible or deportable *Cancellation of