PPB can stand for:

  • Production-possibility boundary, a graph that shows the different quantities of two goods that an economy could efficiently produce with limited productive resources
  • Party political broadcast, a type of political programming in the United Kingdom
  • parts per billion, a unit of concentration
  • Portland Police Bureau, a police agency for the city of Portland
  • Partido Progressista Brasileiro, former name of Progressive Party of Brazil
  • Pirate Party of Brazil
  • Pirate Party of Belgium
  • Pirate Party of Bulgaria
  • Pleuropulmonary blastoma, a type of lung cancer
  • Plasma protein binding, a factor contributing to the efficacy of a pharmacological agent