GLIF, the Global Lambda Integrated Facility, is an international virtual organization that promotes the paradigm of lambda networking. GLIF provides lambdas internationally as an integrated facility to support data-intensive scientific research, and supports middleware development for lambda networking. It brings together some of the world's premier networking engineers who are working together to develop an international infrastructure by identifying equipment, connection requirements, and necessary engineering functions and services.

The GLIF participants are National Research and Education Networks (NRENs), consortia and institutions working with lambdas. Administrative support is provided by TERENA with financial support from sponsoring organisations.