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|Predecessor||Locomotive and Allied Manufacturers' Association|
|Headquarters||London, England, UK|
The Railway Industry Association (RIA) is the main industry trade group for railway equipment manufacturers in the United Kingdom. Eligibility for membership to RIA is simple in that it is open to all UK-based companies in the railway supply industry. The Association’s principal activities are to:
- Represent members’ interests to Government, regulators, Network Rail and others including the Transport Select Committee
- Offer a forum for dialogue between members
- Provide information to members
- Promote exports of members’ products and service 
The Railway Industry Association has four key functions - Public Affairs & Policy, Technical & Innovation, Exports and Events & Information. 
It is allied with but not the same as the Rail Delivery Group.
The Railway Industry Association was formed more than 140 years ago, but has been in its present from since 1971. 
It is headquartered off the A302, near the Embassy of Ireland, London, in the City of Westminster. It is governed by a Board of rail industry leaders from the various sub sectors such as rolling stock, infrastructure, SMEs and consultants.
It represents over 280 companies in the UK railway equipment industry.
It has published reports on behalf of the rail industry including the Electrification cost challenge. It commissioned research from Oxford Economics in 2018 showing that the rail industry provides £36 billion in economic growth, supports 600,000 jobs and provides £11 billion in tax revenue a year. . On October 1st 2019 it published an update to the recommendations to government to avoid boom and bust cycles.
- Companies House
- "About Us". www.riagb.org.uk. Retrieved 2019-03-21.
- "Electrification Cost Challenge Report". www.riagb.org.uk. Retrieved 2019-03-14.
- "Transport Select Committee's Rail Infrastructure Investment Report: Progress Review". www.riagb.org.uk. Retrieved 2019-10-01.