PurposeWhile numerous studies have studied knowledge transfer (KT) and endeavored to address factors influencing KT, little effort has been made to integrate the findings of prior studies. This paper aims to classify the literature on KT through a detailed exploration of different perspectives of KT inter and intra organizations.Design/methodology/approachUsing actor–network theory (ANT) as the baseline, we conducted a systematic review of KT research to summarize prior KT studies and classify the influential factors on KT. The review covered 115 empirical articles published between 1987 and 2017.FindingsDrawing on the review and ANT guidelines, the authors proposed a conceptual model to categorize KT constitutes into objects including those related to (1) knowledge, (2) knowledge exchange and (3) technology, as well as actants including those related to (4) organization, (5) team/business unit and (6) knowledge sender/receiver.Research limitations/implicationsAdopting a holistic synthesized approach based on ANT, this research puts forward a valid theoretical foundation on further understanding of KT and its antecedents. Indeed, this paper investigates KT inter and intra organizations to recognize and locate the key antecedents of KT, which is of substantial applicability in today’s knowledge-driven economy.Practical implicationsThe findings advance managers and practitioners’ understanding of the important role of actants and objects and their interplay in KT practices.Originality/valueWhile most studies on KT have a narrow focus, this research contributes to holistic understanding of motivational, behavioral, technological and organizational issues related to KT. It also offers a thorough and context-free literature review on KT, which synthesizes the findings of prior studies on KT.