dentsu Japan Email Format

Advertising ServicesTokio, Japan1001-5000 Employees

Dentsu Japan operates as a network of more than 160 group companies in Japan. It offers services across four transformation domains—Advertising Transformation, Business Transformation, Customer Experience Transformation, and Digital Transformation—to help clients modernize how they communicate, operate, and engage customers. Based in Tokyo, Japan, the organization maintains a sizable workforce to support ongoing service expansion in response to rapid social change.

Its client base includes organizations seeking end-to-end transformation across advertising, business, customer experience, and digital marketing foundations in the Japanese market. In June 2026, a collaboration involving Seven & i Holdings and CyberAgent with Dentsu Inc. was announced to establish a new company focused on in-store advertising and digital signage.

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