Marketing can assist libraries in determining their future and identifying quality products - services, programs and materials. Marketing provides a theoretical framework addressing the specific library and information science questions facing public, school, special and academic libraries in both the public and private sectors. The purpose of this paper is to analyse information marketing. For this purpose, characteristics of information, concept of marketing are to be studied, and then the process of information marketing program is analysed by market segmentation, marketing audit, marketing mix(products, pricing, place, promotion) and marketing system development. As a result, traditionally having focused on the undifferentiated and concentrated marketing strategies in the market segmentation, now they have to develope differentiated strategies in order to compete with other information centers.