P is the sixteenth letter of the Latin alphabet. It may also refer to:
- P (band), an American rock band
- P-type semiconductor
- p-value of a given result in an experiment is the result's statistical significance; the probability of observing this result or a more extreme result, by chance alone.
- Haplogroup P (mtDNA), a human mitochondrial DNA (mtDNA) haplogroup.
- Haplogroup P (Y-DNA), a Y-chromosomal DNA (Y-DNA) haplogroup.
- P (complexity), computational complexity theory
P may also refer to:
- P, the author of the Hellenica Oxyrhynchia
- P, the New Zealand street name for pure methamphetamine.
As a symbol:
- P (or p) is sometimes confused with rho, the seventeenth letter of the Greek Alphabet, or is used as a substitute when the correct character is not available.
- P, the symbol for the chemical element phosphorus
- p is the usual symbol for momentum
- P is used as an emoticon in the form of :P
<p>is the HTML element to mark the beginning of paragraphs.
| Latin letter disambiguation |
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