Allyson Stewart-Allen

About

Allyson Stewart-Allen is a California-born consultant, author, and executive educator who has spent over 30 years advising leaders and organisations across Europe and the U.S. A recognised expert on American business culture, she brings practical insight into how to successfully engage, influence, and lead in U.S. business environments. Allyson is the author of the best-selling Working with Americans and has advised over 260 organisations across 27 countries. She regularly coaches senior executives on navigating cross-border growth with impact and cultural intelligence.

Experience

Founded International Marketing Partners, advising global leaders on U.S. business culture, cross-border expansion, and international growth strategy.
Recognized authority on U.S. workplace culture, advising international executives on communication styles, negotiation approaches, and relationship-building strategies for working successfully with American colleagues and partners.
Advised over 260 companies across 27 countries on market entry, leadership alignment, and working effectively with American stakeholders.
Author of Working with Americans and Marketing in the USA, widely used guides for navigating U.S. business practices.
Delivered executive coaching and corporate education for Fortune 100 companies and institutions including London Business School, HEC Paris, Oxford Saïd, and Duke CE.
Served as a LinkedIn Learning instructor, designing virtual programs for global leaders on U.S. business norms and executive presence.
Supported leadership development programs for multinational firms such as Lufthansa and BAE Systems, earning two EFMD Excellence in Practice Awards.
Appears regularly in international media (BBC, CNN, CNBC, FT) as a subject matter expert on American business culture and international leadership.

Allyson’s session was insightful, energetic, and deeply practical. Attendees were fully engaged and left with clear takeaways for working effectively with American counterparts.

Learner Feedback

This coaching transformed how I show up with senior leaders. Allyson’s feedback was sharp, supportive, and tailored perfectly to U.S. business culture.

Learner Feedback

How Country Navigator helped BP virtualize it's leadership curriculum

Allyson Stewart-Allen