This study investigates knowledge hiding (KH), a growing research area of increasing importance across multiple organisational levels. The rapid expansion of KH research runs the risk that existing knowledge is not accumulated but constantly re-invented. Therefore, this study aims to enhance our understanding by systematically reviewing the antecedents, boundary conditions and outcomes of KH. We develop a thematic mapping of 173 papers, identifying key antecedents, boundary conditions and outcomes of KH alongside emerging knowledge gaps and pertinent research questions. Leveraging these insights, we construct a multi-level framework that categorises KH at the micro, meso and macro levels, integrat ing findings from our thematic analysis. This study provides a consolidated view of KH literature and is a valuable guide for scholars seeking to advance this domain.