The GPA Midstream Association is a non-profit trade organization that has served the needs of its member companies and personnel in the development and maintenance of industry standards, the generation and dissemination of technical knowledge, monitoring and action on related legislative and regulatory issues, and providing a forum for the interchange of technology and developments in the midstream industry since 1921.

GPA Midstream members are operating and producing companies engaged in the processing of natural gas into merchantable pipeline gas, volume movement, or further processing of liquid products from natural gas – commonly referred to as the midstream sector of the energy industry. As the primary advocates for the midstream industry, the association enhances the viability of natural gas, natural gas liquids and crude oil through research, technical, environmental, safety and advocacy activities.