IPP may refer to:
Organisations
Independent power producer India Pride Project, recovering stolen Indian artefacts Istituto per la Protezione delle Piante (Institute of Plant Protection), Italy Max-Planck-Institut für Plasmaphysik, a physics institute in Garching, Germany Intermountain Power Plant, a coal power plant, Delta, Utah, USA. Institute of Particle Physics, Canada
Science and technology Isopentenyl pyrophosphate, a metabolite Ionospheric pierce point, where a satellite signal crosses the ionosphere Induratio penis plastica, Peyronie's disease Nob Yoshigahara Puzzle Design Competition, also known as the International Puzzle Party
Sports International Player Pathway, program for non-Americans players to join the NFL
Computing Integrated Performance Primitives, a software library Internet Printing Protocol Unbounded interactive polynomial time in computational complexity theory
Politics Irish Parliamentary Party or Irish Home Rule Party, UK Istehkam-e-Pakistan Party, Pakistan Iran Prosperity Project, Iran
Other uses Illinois Prairie Path, a multi-use trail in the west suburbs of Chicago, Illinois, US Imprisonment for public protection, England Individual Pension Plan, Canada International price program, US Intellectual Property Protection Integrated Product Policy in Life Cycle Thinking David Ipp (1938-2020), judge and politician, NSW, Australia Ip, Sălaj (Hungarian Ipp), a commune in Romania