Dentsu Inc., commonly known as Dentsu, is a multinational advertising and public relations company based in Japan. Founded in 1901 by Hoshiro Mitsunaga, Dentsu has grown to become the largest advertising agency brand in Japan and one of the largest in the world. Headquartered in Tokyo, Japan, Dentsu's headquarters is located in the Shiodome district.

The modern building stands as a symbol of the company's innovative and forward-thinking approach. Dentsu offers a wide range of products and services across multiple disciplines, including advertising, media planning and buying, digital marketing, event planning, public relations, sponsorship, and creative services. The company caters to various industries and clients, ranging from large corporations to small businesses.

On a global scale, Dentsu has expanded its operations through numerous subsidiaries, joint ventures, and partnerships. Noteworthy subsidiaries include Dentsu Aegis Network, a global media group delivering digital marketing services, and Dentsu Tec, a creative agency focusing on advertising and marketing solutions. Joint ventures and partnerships also exist with major companies such as Toyota, Microsoft, Sony, and NTT Docomo.

Dentsu has established a strong market position globally, with its total gross profit in 2019 reaching approximately 927 billion Japanese yen. The company competes with other global advertising giants such as WPP, Omnicom, and Publicis Groupe. In recent years, Dentsu has undergone several significant changes and achievements.

In 2017, the company rebranded its global network as Dentsu Aegis Network to enhance its digital capabilities and better serve its clients. Dentsu has also been actively involved in sustainability initiatives and corporate social responsibility efforts, including the promotion of diversity and inclusion within the company and the industry. As of the latest available information, Dentsu continues to evolve and adapt to the changing landscape of the advertising industry.

The company has a strong presence in Asia, with expanding operations in the Americas, Europe, and other regions. Dentsu remains committed to providing innovative marketing solutions and maintaining its position as a global leader in the advertising and communications industry