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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> is the HTML element to mark the beginning of paragraphs.
• The complexity class P, in computational complexity theory

P may also refer to:

• P, the author of the Hellenica Oxyrhynchia
• P, the New Zealand street name for pure methamphetamine.
• 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 is used as an emoticon in the form of :P
• Phosphorus, an element.

Template:Letter disambig

• Disambiguation pages