Monad may refer to:

Philosophy

Monad (philosophy), a term meaning "unit"

• Monism, the concept of "one essence" in the metaphysical and theological theory

• Monad (Gnosticism), the most primal aspect of God in Gnosticism

  Great Monad, an older name for the taijitu symbol

• Monadologia Physica, by Immanuel Kant

• La Monadologie, by Gottfried Leibniz, a book about a basic unit of perceptual reality

• Monas Hieroglyphica, a 1564 book by John Dee describing a symbol of his own invention

Mathematics, science and technology

• Monad (biology), a historical term for a simple unicellular organism

• Monad (blockchain), a Layer-1 blockchain and cryptocurrency

• Monad (category theory), a construction in category theory

• Monad (functional programming), functional programming constructs that capture various notions of computation

• Monad (homological algebra), a 3-term complex

• Monad (nonstandard analysis), the set of points infinitesimally close to a given point

• Monad shell, the code name for the PowerShell command line interface for Microsoft Windows

Fictional entities

• Monads, megastructures in Robert Silverberg's 1971 novel The World Inside

• Monad Proxy, a character in the 2006 anime series Ergo Proxy

• John Monad, the title character of the 2007 television series John from Cincinnati

• Monad/Monado, a sword in the 2010 videogame Xenoblade Chronicles

Other uses

• Monad (music), a single note or pitch

• Monad University, in Hapur, Uttar Pradesh, India

• The emblem of the technocracy movement

See also

• Dyad (disambiguation)

• Monade

• Monadic (disambiguation)

• Monoid, in abstract algebra

• , for titles starting "Monad" or "Monadic"