IAPP

IAPP may refer to:

• Islet amyloid polypeptide, a protein produced by the pancreatic beta-cell that has been linked to type II diabetes
• Inter-Access Point Protocol (IEEE 802.11F), an optional extension to IEEE 802.11 that provides wireless access-point communications among multivendor systems
• iOS application or iApp

• International Association of Panoramic Photographers
• International Association of Privacy Professionals
• International Association of Parliamentarians for Peace