P5

P5 may refer to:

== In science and technology == 311P/PANSTARRS, also known as P/2013 P5 (PANSTARRS), an asteroid discovered by the Pan-STARRS telescope on 27 August 2013 P5 Truss Segment, an element of the International Space Station Period 5 of the periodic table of elements Styx (moon), the fifth moon of the dwarf planet Pluto Particle Physics Project Prioritization Panel, a scientific funding advisory group in the United States Pregnenolone, a steroid hormone