Mediacom

S · Core PlatformsRebranded

London, England, United Kingdom · Founded 1986

10001+ employees

Sourced & current · updated Jul 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 top five global media agency networks by billings; merged into EssenceMediacom in 2023

Ownership

Parent: GroupM

Competitors

OMD

PHD

UM (Universal McCann)

G

Goodstuff

Hearts & Science