Passionate About Helping Others Succeed

Your success is what drives us. We coach and train you and your team to think differently about your business and your purpose. Trained in Systems Thinking, we provide a variety of tools and resources to help you think, plan, and act to achieve your desired results.

We are Eric and Jeri Denniston, co-founders of Denner Group International, Inc., a strategic management coaching and training organization. For more than 30 years, we have been committed to helping organizations large and small achieve their full potential. We draw on our expertise in strategic management, business planning, leadership coaching, financial and operations management, and marketing to help you realize your objectives. Our team of experienced professionals brings a wealth of knowledge and practical experience to every project. Your success is our success!

Who We Are

photo of Eric and Jeri Denniston
Strategic Management Coaches and Trainers

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.  
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Challenges We've Helped Solve

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.

Our Values

Creative Spirit

  • Seek an open exchange of ideas and information
  • Be resourceful, inquisitive, and innovative

Servant Leadership

  • Serve our clients, friends, family, and community
  • Lead by example and coaching

Respect and Trust

  • Be honest and professional
  • Listen to others

Wisdom and Enthusiasm

  • Continue lifelong learning and self improvement
  • Eagerly share Insights and knowledge

Ready to Take Your Business to the Next Level?

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.

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