Main Page | See live article | Alphabetical index PK PK may stand for: Pakistan (ISO country code) Paperinik Psychokinesis Pharmacokinetics Probability of kill (missile) Public key Primary key Player killer (in MMORPGs) Placekicker (American football) Pickoff (baseball) Penalty kick Peak or park (map abbreviation) This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.