Introduction: Evidence based librarianship (EBL) makes it possible to solve problems using of the best research evidences and reflects the results for decision making in the future. In spite of all the advantages of EBL, however there are challenging problems in conducting researches in this field, so it is neccessary to find or use new approaches that can be useful in this area of study. An alternative is capturing management approaches from another fields such as business. The American productivity and quality center process classification framework as one of the best process-oriented models, allows organizations to see their activities from a cross- industry process view point. Regarding the ability of this model in benchmarking organizations processes, extracting the best practices, and classifying them from category to activity levels, it can be used in librarianship, specially EBL as well. Objective: This article introduces the APQC process classification framework and explains it's structure to classify processes in two groups including operational and management and support processes. It proposes how PCF can contribute to EBL researchers as well.