P45

P45 may refer to:

Vessels

 * ARA Robinson, a corvette of the Argentine Navy
 * HMS Unrivalled (P45), a submarine of the Royal Navy
 * SPANISH PATROL VESSEL Audaz

Other uses

 * P45 (tax), a form designation used as a metonym for termination of employment
 * Bell P-45, an American fighter aircraft later redesignated P-39C
 * Intel P45, a computer chipset
 * Mount Pleasant/Scottdale Airport, in Fayette County, Pennsylvania, United States
 * P45 road (Ukraine)
 * Papyrus 45, a biblical manuscript
 * Pneumonoultramicroscopicsilicovolcanoconiosis, a synonym for the disease known as silicosis
 * P45, a state regional road in Latvia
 * P45, a digital camera back made by Phase One
 * P45, a hybrid microcar made by Jeremy Clarkson on Top Gear