Trichotomy

A trichotomy can refer to:


 * Law of trichotomy, a mathematical law that every real number is either positive, negative, or zero
 * Trichotomy theorem, in finite group theory
 * Trichotomy (jazz trio), Australian jazz band, collaborators with Danny Widdicombe on a 2019 album
 * Trichotomy (philosophy), series of three terms used by various thinkers
 * Trichotomy (speciation), three groups from a common ancestor, where it is unclear or unknown in what chronological order the three groups split
 * Trichotomous or 3-forked branching in botany
 * Trichotomism, a term for the tripartite view in Christian anthropology