Dyad or dyade may refer to:
Arts and entertainment Dyad (music), a set of two notes or pitches Dyad (novel), by Michael Brodsky, 1989 Dyad (video game), 2012 Dyad 1909 and Dyad 1929, ballets by Wayne McGregor Dyad Institute, a fictional biotech corporation in the Canadian TV series Orphan Black
Other uses Dyad (biology), a pair of sister chromatids Dyad (philosophy), used by the Pythagoreans for the number two, representing "twoness" or "otherness" Dyad (sociology), a group of two people Grizzled Young Veterans, also known as The Dyad, a British professional wrestling tag team
See also Dyadic (disambiguation) Diad, in cell biology Dryad (disambiguation) Dyad pedagogy, a goal-directed teaching method Dyad symmetry, in genetics Monad (disambiguation) Triad (disambiguation) ("group of 3")