Institute of Internal Auditors (IIA)The Institute of Internal Auditors is an international professional association with global headquarters in Altamonte Springs, Florida, USA. The IIA is the internal audit profession's global voice, recognized authority, acknowledged leader, chief advocate, and principal educator. Generally, members work in internal auditing, risk management, governance, internal control, information technology audit, education, and security.Globally, The IIA has more than 175,000 members. The IIA in North America comprises 159 chapters serving more than 70,000 members in the United States, Canada, the Caribbean, Bermuda, Guyana, and Trinidad & Tobago.