P101

P101 may refer to:

Vessels

 * ARM Leandro Valle, a patrol boat of the Mexican Navy
 * HMAS Bayonet (P 101), a patrol boat of the Royal Australian Navy
 * NRTL Oecusse, a patrol boat of the Timor Leste Defence Force
 * VOEA Ngahau Koula, a patrol boat of the Tongan Maritime Force

Other uses

 * Papyrus 101, a biblical manuscript
 * PIK3R5, phosphoinositide 3-kinase regulatory subunit 5
 * Programma 101, a desktop programmable calculator
 * P101, a state regional road in Latvia