- Audit Bureau of Circulations (UK)
 - Certifies the circulations of thousands of magazines and newspapers around the world. - Audit Bureau of Circulations (USA)
- Self-regulatory auditing organization, responsible to advertisers, advertising agencies, and the media they use for the verification and dissemination of members' circulation, readership, and audience information.
- Audit Bureau of Circulations Australia
- Provides advertisers, marketers, and media buyers with verified circulation data for paid publications. Site also includes the Circulations Audit Board and Audit Bureau of Verification Services.
- BPA International
- Global provider of audited data for the marketing and media/information industries.
- Certified Audit of Circulations
- Nonprofit organization doing circulation auditing for newspapers, community publications, Internet and other media.
- New Zealand Audit Bureau of Circulation
- Provides circulation figures to advertisers, advertising agencies, publishers, and the public.
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