Either/or and related terms may refer to:

• Either/Or (Kierkegaard book), an 1843 book by Søren Kierkegaard
• Either/Or (Batuman novel), a 2022 novel by Elif Batuman
• Either/Or (album), a 1997 album by Elliott Smith
• Either/Or, a 1999 British comedy game show written and presented by Simon Munnery
• either...or and neither...nor, examples of correlative conjunctions in English
• Exclusive or, the logical meaning of "either ... or ... but not both"
• Logical disjunction, the logical meaning of "either ... or ... or both"
• Either-or fallacy, another name for false dilemma
• Either–or topology, a structure in mathematics

• For some other uses of the English words either and neither:
  • Correlative conjunction
  • English determiners
  • Indefinite pronoun
  • Wiktionary entries for either and neither
• Or (disambiguation)
• Nor (disambiguation)
• All pages with titles beginning with Either
• All pages with titles beginning with Neither
• Ether Or