This study was carried out to investigate the relationship among egg weight and their components in four genetic lines of Kurdish local chicken. 299 eggs were collected from four genetic lines of Kurdish local chicken. After collection, egg weight, yolk weight, albumin weight and shell weight were weighted to nearest (0.01g). The Two principal components (PC1 and PC2) were extracted in Black, Black with brown neck, White shank feather and white non-feathering shank, which explained (82.71, 80.45, 84.09, and 76.40) respectively, of total variation. Significant differences were observed between the four genetic lines (Black, Black with brown neck, white with shank feather, and white non-feathering shank). We found that egg weight highly (P<0.001) correlated with yolk (r²= 0.900, 0.822, 0.898, 0.690) respectively, albumin weight (r²= 0.498, 0.575, 0.524, 0.845) and shell weight (r²= 0.525, 0.549, 0.649, 0.339). It was concluded that egg weight and their component significantly differences among the groups due to the differences in genotypes. These finds could be used to improve egg quality and for selection criteria.