Fundamental

{{wiktionary|fundamental|Fundament|fundament}} '''Fundamental''' may refer to:

* Fundamental frequency, often referred to as simply a "fundamental" * Fundamentalism, the belief in, and usually the strict adherence to the simple or "fundamental" ideas based on faith in a system of thought * ''Fundamentals: Ten Keys to Reality'', a 2021 popular science book by Frank Wilczek * ''The Fundamentals'', a set of books important to the Christian fundamentalism * Any of a number of fundamental theorems identified in mathematics, such as: ** Fundamental theorem of algebra, a theorem regarding the factorization of polynomials ** Fundamental theorem of arithmetic, a theorem regarding prime factorization * Fundamental analysis, the process of reviewing and analyzing a company's financial statements to make better economic decisions

== Music == * Fun-Da-Mental, * ''Fundamental'' (Bonnie Raitt album), 1998 * ''Fundamental'' (Pet Shop Boys album), 2006 * ''Fundamental'' (Puya album) or the title song, 1999 * ''Fundamental'' (Mental As Anything album), 1985 * ''The Fundamentals'' (album), by Juvenile, 2014 * ''The Fundamentals'', by Theo Croker, 2006 * ''Fundamentals'', an EP by Raheem Jarbo, 2005

==Other uses== * "Fundamentals" (''Arrow''), an episode of the television show ''Arrow''