APG

APG is an abbreviation.  Some of the things it can mean are:

 Aboriginal Provisional Government, Indigenous Australian independence movement
 Android Privacy Guard, privacy for the Android operating system
 Angiosperm Phylogeny Group, a work of several botanists
 Anterior Pituitary Gland, an endocrine gland
 Artist Publishing Group
 Association of Professional Genealogists
 Associated petroleum gas
 Atlas of Peculiar Galaxies
 Austrian Power Grid, Austrian electric power transmission company
 Assists per game, in basketball