LNT may refer to: Alliant Energy (stock symbol LNT) Leave No Trace camping Linear no-threshold model for ionizing radiation Latvijas Neatkarīgā Televīzija, TV station Lean NOx trap, an NOx adsorber A computer language descended from E-LOTOS One of two treaties signed prior to the Second World War: London Naval Treaty (1930) Second London Naval Treaty (1936)