TPN stands for:

  • The Transatlantic Policy Network, a lobby group of European and American corporations
  • Total Parenteral Nutrition, English for parenteral nutrition (nutrition, bypassing the gastrointestinal tract )
  • Transparent Kippwasserschöpfer after Nansen, a sample collector for sea water in oceanography, also known as Nansen bottle

Tpn stands for:

  • Subject, in the experimental psychology term for a participant in a study
  • Disambiguation
  • Abbreviation