The present study deals with numerical results of parametric instability of delaminated woven fibre Glass/Epoxy composite curved panels at elevated moisture contents. A composite shell model based on first order shear deformation theory with provision of mid plane delamination is considered for study. The effects of moisture uptake on parametric instability of various delaminated composite curved panels are investigated. The results indicate that the parametric instability characteristics of composite panels are greatly influenced by the delamination size and moist parameters involved in the study. (C) 2019 Elsevier Ltd. All rights reserved.