While knowledge management (KM) needs to be introduced in order to enhance the competitiveness of Korean firms, most of the current literature focuses on defining the concept of KM and developing its framework. This research attempts to develop an introduction methodology of KM, based on four dimensions such as organization, information technology, process, and culture. The methodology was applied to firm L, which recently adopted KM. A result from the analysis of this case study shows that firm L performed well in the dimensions of organization, information technology, and culture.