Primus circumdedisti me - First to surround (Motto inscribed on the coat of arms of Juan Sebastian Elcano, who accompanied navigator Ferdinand Magellan in the first voyage around the world - Today is the name of the school-ship of the Spanish Armada)
Primus inter pares - First among equals
Primus millum paxarorum est - The first corn is for the bird
Primus pilus prior - Primary of the first cohort (Senior Centurion of a legion)
Princeps civium - The first of the citizens (title used by the emperor Octavian Caesar Augustus )
Princeps Senatus - Leader of the senate (First among equals)
Principiis obsta - Resist at the beginning (Withstand the first approaches or encroachments)
Principium importans ordinem ad actum - Principle governing the act
Principium omnium - Principle of all things
Principium pricipiorum - Principle of principles
Principium sine principio - Principles without beginning
Prior in tempore, potior in iure - First in time, best in the Law (Legal term)
Prior tempore, potior iure - The first in time, wins the right (Legal term - First to file - the first to register the property has the right to it)
Prius est esse - Before is being
Prius flammis combusta quam Numantia armis victa - Numancia first burned up than defeated (one of the slogans of the Spanish Army / Cavalry)
Prius mori quam foedari - Die before dishoner
Priusquam islam pugnam pugnabo ego etiam prius dabo aliam pugnam - Prior to wage this struggle, I will fight against Islam even before I start another fight
Privilegium personale non transit ad heredes - The personal privilege is not transmitted to the heir (Legal term)
Pro amcis suis - For his Friends (Motto of the Bishop of Diocese of St. Petersburg)
Pro ara et focis - For the altar and the homeland
Pro bono publico - For the good of the people (Legal term - when a lawyer takes a case for free)
Pro Brasilia Fiant Eximia - Let us do the best for Brazil (Motto of the Coat of arms of the State of Sao Paulo, Brazil - Thank you: Decio Frederico Viccino)
Pro capta lectoris, habent sua fata libelli - According to the ability of the reader, the books have their fate (Terentianus Maurus - a text is only useful as the capacity of the reader is to understand it)