Knowledge management (KM) is a rising interest in today's business, great number of construction industry turning to knowledge management is gradually increasing because of its definite benefit realize. In project-based industry such as construction, KM is being viewed as a critical success factor in the everyday business of the society. Two hundred and fifteen designated project managers in the Nigerian construction industry were selected using stratified random sampling. A hypothesized model of critical success factors (CSF) of KM, and organizational performance (OP) was tested using structural equation modeling approach (observed variable), and a proposed model was therefore developed. Nine constructs of CSF with their reliability and Cronbach's Alpha coefficient of 0.87, 0.82, 0.74, 0.92, 0.87, 0.82, 0.90, 0.71 and 0.70