Fundamental

Template:Sister project 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

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