Purpose –This study attempted to examine the Influence of Organizational Citizenship Behavior by five dimensions: (altruism, courtesy, sportsmanship, conscientiousness, and civic virtue) on Knowledge Sharing in the Jordanian business environment – Specifically in pharmaceutical industry companies. 

Design/methodology/approach – For this purpose, a questionnaire was developed and distributed to (205) employees were selected from the population of pharmaceutical industry companies. Number of (193) questionnaires were returned, (4) were rejected due to incomplete responses and (189) responses which comprises (92 %) of the target sample.

Findings –The most important findings of the study reveled that dimensions of organizational citizenship behavior (respectively: Sportsmanship, Conscientiousness, and Altruism) had more impact on the knowledge sharing are.

Originality/value – The paper contributes to previous research by adding to existing knowledge regarding Knowledge Sharing. The paper makes key recommendations towards development of Citizenship organizational behavior in Jordanian pharmaceutical industry companies and consequently enhancing knowledge sharing.