Lars Erling Olsen is dean bachelor and professor of marketing at BI Norwegian Business School. Previously, Olsen served as head of the department at the Department of Marketing at Kristiania University College.

Professor Olsen's general expertise lies in marketing strategy/planning and consumer behavior. His specific research interest is in brand management/strategy and marketing. Olsen's research has been published in several high ranked journals, and he has co-authored academic textbooks on brand management and marketing communication.

Actively involved with the industry, Professor Olsen has worked in a variety of different types of marketing projects. He has served as consultant and advisor to leading Nordic brands/companies. A popular speaker, Olsen has conducted marketing seminars in a variety of forums and topics. Before joining academia, Olsen worked as a brand manager in the food industry for several years.