PBT may refer to:

Science, technology and medicine

  • Paul–Bunnell test, an heterophile antibody test
  • Pentabromotoluene, an aromatic chemical compound
  • Persistent, bioaccumulative and toxic substances, a class of compounds that have high resistance to degradation
  • Polybutylene terephthalate, plastic used as an electrical insulator
  • Proton beam therapy, a cancer treatment
  • Provider Backbone Transport, IEEE 802.1 networking technology
  • Preliminary breath test, with a hand-held breathalyzer
  • Property-based testing, a software testing framework; for example see QuickCheck<!--better target needed-->

Education

  • Paper-based testing, such as TOEFL

Other uses

  • Permian Basin Royalty Trust (NYSE symbol)
  • Profit before tax, a variation of EBIT
  • Progressing Ballet Technique, a form of cross training used for ballet that is uses ballet specific exercises similar to Pilates
  • Pittsburgh Ballet Theatre, a ballet company in Pennsylvania, US
  • "PBT", a song by Travis Scott, Tyla and Vybz Kartel from the 2025 album JackBoys 2