William J. Callahan Iii

Director, Government & Strategic Affairs at Blockchain Intelligence Group


William (Bill) J. Callahan III is a law enforcement veteran with 20+ years in

the Drug Enforcement Administration (DEA). He retired from the DEA as the

Special Agent-In-Charge for the St. Louis division and held numerous posts in

the DEA since joining in early 2000. Bill specialized in complex multi-jurisdictional money-laundering investigations. In many of these

investigations, illicit actors took advantage of trade-based money laundering schemes, dark web narcotic distribution involving cryptocurrency, and market manipulation to obfuscate the true source of the funds. While assigned to DEA Headquarters, Bill established DEA’s proactive money laundering audit team, where he took part in the development of creating policy and procedures in furtherance of DEA’s undercover operations involving cryptocurrency.


  • Director, Government & Strategic Affairs

    Current role

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