P85

P85 or p85 may refer to:
 * Ruger P85, a 1985 pistol model
 * Yamaha P-85, an entry-level digital piano
 * McDonnell P-85, an expermental parasite fighter of the USAF in the 1950s.

and also :
 * a Latvian State first class road
 * a set of protein regulatory sub-units related to the P110δ enzyme biochemistry