APK

APK may refer to:

Science

 * Adenylyl-sulfate kinase
 * Amplitude and phase-shift keying
 * Android application package file format
 * apk-tools, the package manager of Alpine Linux
 * Aspartokinase, especially lysC

Other uses

 * Afrikaanse Protestantse Kerk, Calvinist church in South Africa
 * Algemene Periodieke Keuring, the vehicle inspection procedure in the Netherlands
 * Alliance Party of Kenya, a political party established in 2012
 * Apopka High School, Florida
 * Arbetarpartiet Kommunisterna, the Swedish name for the Communist Party of Sweden (1995)
 * Arbejderpartiet Kommunisterne, the Danish name for the Workers' Communist Party (Denmark)
 * Air Peace (ICAO airline code)