Oil and Gas Pipelines Trade Associations

American Gas Association (AGA)

Represents more than 200 local energy companies delivering natural gas; provides advocacy, safety, and technical programs for utilities and the broader gas value chain.

https://www.aga.org Membership: 200

American Line Pipe Producers Association (ALPPA)

Coalition of U.S. large‑diameter line pipe manufacturers advocating domestic production, fair trade, and standards that support energy pipeline infrastructure.

https://www.alppa.org Membership: 6

American Petroleum Institute (API)

National trade association for the U.S. oil and natural gas industry setting hundreds of standards and advocating policy across upstream, midstream (including pipelines), and downstream sectors.

https://www.api.org Membership: 600

American Public Gas Association (APGA)

The only U.S. association for publicly owned natural gas utilities, providing federal advocacy, safety/operations resources, and networking for systems in 38 states.

https://www.apga.org Membership: 730

Association of Oil Pipe Lines (AOPL)

Advocates responsible public policies and safety excellence for U.S. liquids pipelines; membership includes crude, refined products and NGL pipeline operators.

https://www.aopl.org Membership: 50

Common Ground Alliance (CGA)

National nonprofit dedicated to preventing damage to underground utilities (including pipelines); a member‑driven community and home to the Damage Prevention Institute.

https://commongroundalliance.com Membership: 2,000

Distribution Contractors Association (DCA)

Represents distribution pipeline and utility contractors and their suppliers; focuses on safety, labor relations, and best practices for gas distribution construction.

https://www.dcaweb.org Membership: 240

Energy Connections Canada (ECC)

Canada’s full‑spectrum midstream pipeline industry association (successor to the CEPA Foundation), connecting operators and the supply chain to advance safety, innovation, and public engagement.

https://energyconnectionscanada.com Membership: 100

GPA Midstream Association

U.S. midstream association for gas gathering, processing and NGLs; develops standards, manages cooperative research, and hosts the GPA Midstream Convention.

https://www.gpamidstream.org Membership: 70

INGAA Foundation, Inc.

Affiliated with INGAA, the Foundation convenes pipeline operators and suppliers to advance research, safety and efficient construction/operations practices.

https://ingaa.org Membership: 220

International Gas Union (IGU)

Global gas industry association covering the full value chain from supply to transmission, distribution and end‑use; members span 70+ countries.

https://www.igu.org Membership: 136

International Pipe Line & Offshore Contractors Association (IPLOCA)

Worldwide association of onshore and offshore pipeline construction contractors and suppliers promoting safety, technology sharing and best practices.

https://www.iploca.com Membership: 250

Interstate Natural Gas Association of America (INGAA)

Trade association for North American interstate natural gas transmission companies; members operate nearly 200,000 miles of pipelines.

https://ingaa.org Membership: 27

National Association of Pipe Coating Applicators (NAPCA)

Association of plant‑applied pipeline coating applicators and suppliers advancing coating standards, quality, and industry collaboration.

https://www.napca.com Membership: 135

Northeast Gas Association (NGA)

Regional association for the U.S. Northeast supporting pipeline safety, training, R&D and regional coordination; membership includes LDCs, transmission and 400+ associate companies.

https://northeastgas.org Membership: 435

Pigging Products & Services Association (PPSA)

International trade association for pipeline pigging technology, providing technical information, training and a global network for operators and suppliers.

https://www.ppsa-online.com Membership: 120

Pipe Line Contractors Association (PLCA)

U.S. union pipeline construction trade association that negotiates the National Pipe Line Agreements and promotes safety and industry standards.

https://www.plca.org Membership: 176

Pipe Line Contractors Association of Canada (PLCAC)

Canadian union pipeline construction association for mainline, distribution and maintenance sectors; engages in labor relations, safety and standards.

https://pipeline.ca Membership: 157

Pipeline Research Council International (PRCI)

Global collaborative R&D organization for the energy pipeline industry, uniting operators, associations and suppliers to enhance safety, reliability and productivity.

https://www.prci.org Membership: 68

Southern Gas Association (SGA)

North American natural gas trade association supporting training and professional development across distribution, transmission and gas supply; broad corporate and vendor membership.

https://southerngas.org Membership: 500