Alan and Sandra Gerry Professor of Marketing and Ethics

Mark W. Johnston, Ph.D.

“Crummer’s focus on applied business learning creates real value to the student’s learning experience. I very much enjoy working and speaking in the community (locally and around the world) then bringing that experience back to the classroom.”

Mark Johnston is the Alan and Sandra Gerry Professor of Marketing and Ethics at the Crummer Graduate School of Business at Rollins College. His research focuses on the topics of sales force effectiveness, salesperson motivation, CEO priorities, employee turnover, and ethical business strategy. He is also noted for his expertise in teaching seminars on a variety of international marketing topics.

Dr. Johnston previously taught at Texas A&M and Louisiana State University. He has published extensively on a variety of marketing topics, and has worked with a number of multinational corporations, including Ford, Bayer Chemical, and Daimler-Benz.

He is co-author of Sales Force Management (11th edition), Contemporary Selling (4th edition), and Marketing Management and Essentials of Marketing Management.


  • Consumer Behavior
  • Advertising
  • Economy
  • Marketing
  • Retailing


  • Ph.D., Texas A&M University
  • MBA, Western Illinois University
  • BBA, Western Illinois University


Marketing a Tourist Destination in a COVID-19 World
Dr. Johnston Leads Student International Travel

Marketing a Tourist Destination in a COVID-19 World

Dr. Mark Johnston shares his thoughts on how companies and organizations in the tourist-centric economy of Central Florida will have to adapt, adjust and innovate with the emergence of COVID-19.

Crummer’s Global Summer: Teaching, Consulting and Traveling

A trio of Crummer professors who spent their summers traveling the globe are now ready to share their perspectives with students this fall.