Organizations
- American Research Group, a polling research firm based in Manchester, New Hampshire
- Architectural Resources Group, an architecture firm based in San Francisco
- Architectural Research Group (fl. 1933-1934) of Philadelphia
- Archive for Reformation History, journal
- Argos (retailer), a retailer in the United Kingdom and Republic of Ireland and a subsidiary Home Retail Group
- Austin Rover Group, the name of Britain's largest carmaker during the 1980s
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