A. compacta

A. compacta may refer to:
 * Asperdaphne compacta, a sea snail species
 * Ayenia compacta, the California ayenia, a shrub species native to the Sonoran Desert and surrounding ranges in California, Arizona and Baja California
 * Azorella compacta, the yareta or Llareta, a tiny flowering plant species native to South America