|( See below)|
|Writing system||Latin script|
|Type||Alphabetic and Logographic|
|Language of origin||Latin language|
[( p) f]
|Time period||~-700 to present|
|Variations||( See below)|
|Other letters commonly used with||p(x), ph|
Use in writing systems
A common digraph in English is ⟨ph⟩, which represents the sound //, and can be used to transliterate ⟨φ⟩ phi in loanwords from Greek. In German, the digraph ⟨pf⟩ is common, representing a labial affricate /pf/.
Most English words beginning with ⟨p⟩ are of foreign origin, primarily French, Latin, Greek, and Slavic;[ citation needed] these languages preserve Proto-Indo-European initial *p. Native English cognates of such words often start with ⟨f⟩, since English is a Germanic language and thus has undergone Grimm's law; a native English word with initial /p/ would reflect Proto-Indo-European initial *b, which is so rare that its existence as a phoneme is disputed.
However, native English words with non-initial ⟨p⟩ are quite common; such words can come from either Kluge's law or the consonant cluster /sp/ (PIE *p has been preserved after s).
Ancestors, descendants and siblings
- 𐤐 :
Pe, from which the following symbols originally derive
- Π π :
- 𐌐 : Old Italic and Old Latin P, which derives from Greek Pi, and is the ancestor of modern Latin P. The Roman P had this form (𐌐) on coins and inscriptions until the reign of Claudius, ca. 50 AD (See also Claudian letters).
- 𐍀 : Gothic letter pertra/pairþa, which derives from Greek Pi
- П п : Cyrillic letter Pe, which also derives from Pi
- Ⲡ ⲡ : Coptic letter Pi
- Π π : Greek letter Pi
- P with diacritics: Ṕ ṕ Ṗ ṗ Ᵽ ᵽ Ƥ ƥ ᵱ  ᶈ 
Uralic Phonetic Alphabet-specific symbols related to P:
- U+1D18 ᴘ LATIN LETTER SMALL CAPITAL P
- U+1D3E ᴾ MODIFIER LETTER CAPITAL P
- U+1D56 ᵖ MODIFIER LETTER SMALL P
- ₚ : Subscript small p was used in the Uralic Phonetic Alphabet prior to its formal standardization in 1902 
Derived ligatures, abbreviations, signs and symbols
- ₱ : Philippine peso sign
- ℘ : script letter P, see Weierstrass p
- ℗ : sound recording copyright symbol
- ♇ : Pluto symbol
- ꟼ : Reversed P was used in ancient Roman texts to stand for puella (girl) 
- Ꝑ ꝑ, Ꝓ ꝓ, Ꝕ, ꝕ : Various forms of P were used for medieval scribal abbreviations 
|Unicode name||LATIN CAPITAL LETTER P||LATIN SMALL LETTER P|
|Numeric character reference||P||P||p||p|
- 1 Also for encodings based on ASCII, including the DOS, Windows, ISO-8859 and Macintosh families of encodings.
|NATO phonetic||Morse code|
|Signal flag||Flag semaphore||American manual alphabet ( ASL fingerspelling)||Braille|
- "P", Oxford English Dictionary, 2nd edition (1989); Merriam-Webster's Third New International Dictionary of the English Language, Unabridged (1993); "pee," op. cit.
- Constable, Peter (2003-09-30). "L2/03-174R2: Proposal to Encode Phonetic Symbols with Middle Tilde in the UCS" (PDF).
- Constable, Peter (2004-04-19). "L2/04-132 Proposal to add additional phonetic characters to the UCS" (PDF).
- Everson, Michael; et al. (2002-03-20). "L2/02-141: Uralic Phonetic Alphabet characters for the UCS" (PDF).
- Ruppel, Klaas; Aalto, Tero; Everson, Michael (2009-01-27). "L2/09-028: Proposal to encode additional characters for the Uralic Phonetic Alphabet" (PDF).
- Perry, David J. (2006-08-01). "L2/06-269: Proposal to Add Additional Ancient Roman Characters to UCS" (PDF).
- Everson, Michael; Baker, Peter; Emiliano, António; Grammel, Florian; Haugen, Odd Einar; Luft, Diana; Pedro, Susana; Schumacher, Gerd; Stötzner, Andreas (2006-01-30). "L2/06-027: Proposal to add Medievalist characters to the UCS" (PDF).