The letters BPI can be used in several ways:*Baltimore Polytechnic Institute is a public high school in Maryland Banca Popolare Italiana, an Italian bank merged into Banco Popolare Banco Português de Investimento is a Portuguese bank. Bank of the Philippine Islands is the oldest bank in the Philippines Bits-per-inch or Bytes-per-inch is a standard of measurement for magnetic tape data storage devices In mathematics, the Boolean prime ideal theorem is a (strictly weaker) consequence of… (More on Bpi)