Lapp or LAPP may refer to:

• Bernice Lapp (1917–2010), American Olympic swimmer
• Daniel Lapp, Canadian folk musician
• Henry Lapp (1862–1904), American carpenter-cabinetmaker
• Jack Lapp (1884–1920), American professional baseball player
• Katherine Lapp, administrator of Harvard University
• Nancy Lapp (born 1930), American archaeologist and biblical scholar
• Ralph Lapp (c. 1910–2004), American physicist

• Local Authorities Pension Plan, now branded LAPP, a Canadian not-for-profit defined benefit pension plan
• Light art performance photography, photographic technique emphasizing landscapes, scenery and objects with light
• Laboratoire d'Annecy-le-Vieux de physique des particules, a French experimental physics laboratory
• LAPP software stack, a variation on the LAMP software stack
• a dated and controversial term for the Sámi people

• Lappland (disambiguation)
• All pages with titles containing lapp
• All pages with titles containing lapps
• All pages with titles beginning with Lapp
• All pages with titles beginning with LAPP
• Lap (disambiguation)
• llap (disambiguation)
• IAPP (disambiguation)