Mediacom
RebrandedLondon, England, United Kingdom · Founded 1986
10000+ employees
Sourced & current · updated Aug 13, 2026Website
Mediacom is a global media agency network and subsidiary of GroupM, specializing in media planning, buying, and performance optimization across all channels.
Where they sit
Stack tier: Core Platforms (S)
Attribution & AnalyticsMarketing AgencyPerformance Marketing
Formerly one of the world's largest media agency networks by billings; now merged into EssenceMediacom under GroupM/WPP
Ownership
Parent: GroupM