Who We Are

Leaders in Coaching, Strategic Management and Training

Co-Founded by Eric and Jeri Denniston, Denner Group International is a leading strategic management and coaching company committed to helping businesses achieve their full potential. With our expertise in areas such as business planning, digital marketing, and leadership coaching, we provide the guidance and support our clients need to succeed in today's competitive business environment. Our team of experienced professionals brings a wealth of knowledge and practical experience to every project, ensuring that our clients receive the highest quality strategic guidance and coaching.

Who We Are

photo of Eric and Jeri Denniston
Highly qualified and motivated professionals

Our family-run business has a long tradition in the industry. It was founded in 1984 by Eric & Jeri Denniston. We pride ourselves on providing outstanding customer service in order to guarantee that all of our clients are 100% satisfied.

Eric Denniston called Mexico City home for 27 years, and Spanish was his first language. The culture, traditions and Latin flavor are an ingrained part of his style and how he interacts with people. In his early career he frequently climbed one of the better known volcanoes on his weekend bike rides with a close friend. He shares his cycling enthusiasm with his wife and business partner.
Read more about Eric....

Jeri Denniston called the jungles of Indonesia home for the first 10 years of her life while her father worked as a corporate trainer with the Ford Foundation and then Standard Oil of New Jersey (Exxon). She spoke Bhasa Indonesia like a native as a child, which helped developed her facility for languages later on.  
Read more about Jeri...

Ready to Take Your Business to the Next Level?

Contact Us Today

Whether you need help with strategic planning, digital marketing, or leadership development, we are here to help. Contact us today to schedule a free consultation.

CEO of a global spiritual membership organization sought help in general organization, financial management, email marketing, strategy development, intellectual property matters, and creating a vibrant membership.


Hospital Group Vice President of International Marketing sought help in developing the Mexico portion of his business plan.


President or Board Chair sought to quickly implement a multi-faceted marketing promotions strategy for a new program launch.


Vice President of Strategy or Chief Strategy Officer sought tools to track and manage staff alignment with organizational initiatives.


Business owner sought help establishing and implementing marketing automation campaigns to attract new clients.


Animal Feed CEO and Leadership Team sought ways to reduce expenses without cutting staff.


10,000 Member Non-Profit operating in four states sought help to address stagnating growth and shifting culture among the members.

Challenges We've Helped Solve

We need your consent to load the translations

We use a third-party service to translate the website content that may collect data about your activity. Please review the details and accept the service to view the translations.