This article provides an overview of advertising and digital marketing agencies in Japan🇯🇵.

Dentsu（電通）

Dentsu Inc., a comprehensive advertising agency that boasts the top sales, offers a wide range of services in eight business areas including marketing, digital marketing, and creative. Expanding its scale by actively acquiring overseas advertising companies, it has become the fifth largest advertising agency group in the world.

Hakuhodo（博報堂）

Hakuhodo Inc. is a long-established advertising agency founded in 1895. In 2003, it became a subsidiary of Hakuhodo DY Holdings Inc. along with Dentsu Inc. and Yomiko Advertising Inc., among others.

The Hakuhodo DY Group is composed of 419 subsidiaries and affiliated companies, and as of March 2022, it has more than 25,522 employees working in over 29 countries and regions worldwide.

CyberAgent（サイバーエージェント）

CyberAgent Inc. operates a wide range of businesses, primarily in internet advertising, as well as in gaming and media. Founded in 1998, the company achieved rapid growth as a representative IT venture, including its listing on the Tokyo Stock Exchange Mothers market just two years after its establishment in 2000.

The company's strengths include its ability to maximize advertising effectiveness through its operational and creative capabilities, and it provides comprehensive solutions, such as AdTech utilizing AI.

ADK Creative One（ADKクリエイティブ・ワン）

In 2019, ADK Holdings Inc. split into four companies and transitioned to a holding company structure. The company has three subsidiary businesses with unique specializations. One of them is ADK Creative One, a comprehensive creative company resulting from the integration of the creative solution sector of the former Asatsu-DK and ADK Arts.

ADK Creative One operates as an advertising agency that provides a one-stop service from planning to production in the creative and promotional fields.

CoDigital

CoDigital Inc. is a Tokyo-based digital marketing agency specializing in SEO, paid advertising, and data-driven performance marketing. The company supports both Japanese and international brands in achieving sustainable growth across Japanese and global markets.

A distinctive strength lies in its integrated approach, combining advanced SEO strategies, multi-platform advertising, and analytics-driven optimization. Leveraging deep market insight and cross-border expertise, CoDigital helps clients enhance visibility, increase qualified leads, and maximize return on marketing investment.

https://codigital.co.jp/en/contact

Humble Bunny

Humble Bunny is a Tokyo-based performance marketing agency specializing in SEO, paid advertising, and conversion optimization. The company mainly supports global brands entering or expanding in the Japanese market.

A distinctive feature is its proprietary LocaRISE® Conversion Stack, a framework that combines cultural insight and data-driven strategy to achieve significant growth in e-commerce sales and lead generation.

https://www.humblebunny.com/