The Illuminating Engineering Society of Australia and New Zealand Ltd is an organization with Chapters in the five mainland States of Australia and New Zealand. The Society operates under the name:
IES: The Lighting Society.

The aim of the Society is the advancement of the art and science of illumination and the dissemination of knowledge to all interested parties. The Society's diversified membership includes engineers, architects, educators, students, contractors, manufacturers and designers.

There are two types of membership available; individual and corporate (or company).