Lup or LUP may refer to: Landkreis Ludwigslust-Parchim, a district in the west of Mecklenburg-Vorpommern, Germany Lead units of pressure, a measurement for the estimation of chamber pressures in firearms Leiden University Press, a publishing house and part of Leiden University Liberal Unionist Party, a British political party Liberty Union Party, a political party of Vermont, USA Lift Upgrading Programme, a Singapore Housing and Development Board (HDB) project Kalaupapa Airport, Hawaii (IATA Code: LUP) LUP decomposition, a matrix decomposition useful in solving an n-by-n systems of linear equations Lupus (constellation) Land Utilization Program, New Deal land agency Living Undead Phenomenon (LUP), in "Dance of the Dead"