Editing Principia

{{wiktionary|principia}}

'''Principia''' may refer to:

* ''[[Philosophiæ Naturalis Principia Mathematica]]'', Isaac Newton's three-volume work about his laws of motion and universal gravitation
* Principia ({{abbr|lit.|Literally}} "primary buildings"), the headquarters at the center of Roman forts ({{langx|la|[[castra]]|links=no}})
* [[The Principia]], an educational institution for Christian Scientists in the St. Louis, Missouri, area
** [[Principia College]], a private four-year college in Elsah, Illinois 
** Principia School, a school from early childhood to high school in the St. Louis, Missouri, area
* [[Principia (alga)|''Principia'' (alga)]], a stem-group coralline alga
* Principia, the former name of [[Zope]], the "Z Object Publishing Environment"
* [[2653 Principia]], an asteroid named after Newton's work
* [[The Principia (book)|''The Principia'' (book)]], by [[Emanuel Swedenborg]]
* ''[[Principia Mathematica]]'', a three-volume work on the foundations of mathematics by Bertrand Russell and Alfred North Whitehead
* ''[[Principia Ethica]]'', a book on ethics by G. E. Moore
* ''[[Principia Discordia]]'', a Discordian religious text by Greg Hill (Malaclypse the Younger) and Kerry Wendell Thornley (Lord Omar Khayyam Ravenhurst)
* ''Principia'', astronaut [[Tim Peake]]'s mission as part of the Expedition 46 crew of the International Space Station
* [[Principia (Agents of S.H.I.E.L.D.)|"Principia" (''Agents of S.H.I.E.L.D.'')]], season 5 episode 13 of Marvel's ''Agents of S.H.I.E.L.D.''

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