The aim of this study was to evaluate the proximate composition of leg meat of slow- and fast-growing male broilers raised in different housing systems as conventional deep litter floor housing, indoor slatted floor housing, and indoor deep litter floor housing with range access (free-range). After slaughter at 56 days of age, 10 leg muscle samples of each 6 treatment group (2 x 3) were randomly selected and used to assess the meat quality properties. Compared to fast-growing chickens, slow-growing chicken meat had less protein content and higher fat content (p < .003, p < .05). There were significant differences in the water holding capacity of the meat between the slow- and fast-growing broilers (p < .05). The moisture content of the broiler meat produced from deep litter was found to be significantly greater than those of slatted floor housing and free-range (p < .041). The genotype x housing systems interaction for the fat content of leg meat of broiler was significant (p < .044). In conclusion, it can be said that genotype is more effective on proximate composition of broiler leg meat quality than the housing system.