Either/or and related terms may refer to:
- Either/Or (Kierkegaard book), an influential book by philosopher Søren Kierkegaard
- Either/Or (Batuman novel), a novel by Elif Batuman
- Either/Or (album), music by Elliott Smith
- Either/Or (TV series), a comedy game show
- 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