Havas Appoints New CEOs in Japan and Thailand With Darrell Nelson and Aga Giedroyc

Nelson has been promoted to CEO of Havas Japan, while Aga Giedroyc is now CEO of Havas Thailand taking over from Santiphong Pimolsaengsuriya.

Aga Giedroyc & Darrell Nelson

Havas has announced what it describes as a “significant step towards its ambitious growth plan by reinforcing its leadership teams in Japan and Thailand.

The agency announced that Darrell Nelson has been promoted to the role of CEO of Havas Japan, while Aga Giedroyc will assume the position of CEO of Havas Thailand taking over from Santiphong Pimolsaengsuriya as he transitions from the agency.

In his new role, Nelson will collaborate closely with his teams to drive new business and local client strategies, focusing on leveraging Havas’ integrated capabilities for growth. He will also continue to serve as the APAC Head of Cultural Strategy.


Giedroyc, in tandem with her pivotal role as EVP of Corporate Development for SEA, Japan, and Korea, is now tasked with leading Havas Thailand’s business operations and implementing comprehensive plans for growth. With her distinguished track record, including roles as Chief Investment Officer for APAC and Managing Partner at Havas Media Hong Kong, Giedroyc has played a crucial role in catalysing the agency’s transformation, forging trusted relationships with clients, and spearheading digital capabilities across the network.

“The new leadership structure aims to accelerate the development of the collaborative Village model and strengthen our position in the crucial Southeast Asian and North Asian markets. Darrell has consistently demonstrated his commercial acumen and ability to grow our business in Japan,” said Alberto Canteli, CEO/Chairman Havas, Nordics, CEE & Middle East, SEA, Korea & Japan.

“Aga’s proven ability to build and enhance capabilities in the region will augment our value proposition in Thailand and reinforce our commitment to creative excellence and smart media accountability for growth and momentum.”

Canteli added, “Both Japan and Thailand hold strategic significance, and strong leadership will undoubtedly amplify our presence throughout the region.”


Darrell Nelson shared his thoughts on his new role, stating, “I am thrilled to take on the leadership role and contribute to Havas’ ongoing expansion in Japan. I feel incredibly fortunate to already have an amazing and diverse team in place, dedicated to driving impactful and creative work for a great roster of clients here in Japan. Our integrated

Village model, which seamlessly combines creative and media efforts while collaborating with our Vivendi partners, continues to be the driving force for growth. As we continue to expand with new offerings in market, we are in a great place to continue the momentum we have in Japan and across the region right now.”

Giedroyc said, “To Havas, Thailand represents more than just a market; it’s a dynamic canvas brimming with creativity and potential. I am genuinely inspired by the Thai spirit of ingenuity and innovation. The Village approach, built on fostering collaboration and seamless integration goes beyond a mere business strategy; it resonates deeply with our clients’ genuine needs. I am eagerly anticipating this journey, where I’ll work alongside a remarkable team to infuse Thailand’s unique creativity into Havas’ ethos, ensuring we continue to shape meaningful brands that truly matter through a synergy of creativity, media, and entertainment.”

Harold Henry

Harold Henry

Quite the personality, a regular contributor, and we like to keep him around.

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