LPO

LPO may refer to:
 * Lipid peroxidation
 * LPO-50, a flamethrower built by the Soviet Union
 * Law practice optimization
 * Landing Page Optimization
 * Leading Petty Officer
 * Legal Process Outsourcing
 * Lexicographic path ordering, a well-ordering in term rewriting (computer science)
 * Libertarian Party of Ohio
 * Libration point orbit
 * Licensed Post Office
 * Limited principle of omniscience
 * London Philharmonic Orchestra
 * Louisiana Philharmonic Orchestra
 * Lactoperoxidase, an antibacterial protein present in milk and saliva