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James Olney

Thought Leader

James Olney is the Global Head of Effectiveness at Havas Media Network.

Last updated Oct 17, 2026 by the ATDb Editorial Team

Role
Global Head of Effectiveness
Company
Havas Media
Connections
1

AI-drafted from public sources2 sources cited

Bio

James Olney is the Global Head of Effectiveness at Havas Media Network. He brings more than 15 years of experience in effectiveness, analytics, and measurement, having previously served at Havas as Data Strategy Director for O2/Telefónica, then as Head of Data & Analytics at Mediahub EMEA, where he grew the agency's analytics practice into a significant commercial driver, before most recently leading advanced analytics and effectiveness for the UK and EMEA hub during the IPG-Omnicom transition. Source 1: dispatch.com

Career

Roles with a cited source. All linked roles are in the Roles tab.

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