Knowledge hiding, as an emerging novelty, has started to draw research attention since the last decade or so. Previous literature defined knowledge hiding as one’s deliberate attempt to withhold or conceal requested knowledge from another person and contended that three hiding strategies involved are playing dumb, evasive hiding, and rationalized hiding. Previous researchers found that knowledge hiding could be triggered by distrust, characteristics of the requested knowledge, and an intention to adapt to the social context. The purpose of this study was to investigate the reasons and motivations driving individuals to hide their knowledge in an academic context. A sequential mixed-method research design was adopted to help obtain a better understanding of knowledge hiding phenomena. A qualitative study was firstly conducted, which identified three primary independent constructs that may bring about knowledge hiding – interpersonal relationships, personal traits, sustaining personal knowledge advantage. Then the three constructs were further tested with a quantitative study. Results suggested that “personal traits” and “sustaining personal knowledge advantage” constructs significantly influenced knowledge hiding behavior, but the construct of “interpersonal relationships” had no significant influence on our sample’s knowledge hiding behavior.