This study was conducted to determine the effect of Ocimum gratissimum leaf meal supplementation on the performance, carcass characteristics and meat quality of broiler chicken. One hundred and fifty day old Abhor Acre strains of broiler birds were assigned to five dietary treatments with thirty birds per treatment in a completely randomized design. Ocimum gratissimum leaf meal at 0g, 100g, 200g, 300g and 400g per 100kg of feed was added to the diets. The experiment lasted for seven weeks. Data on feed intake, weight gain and feed conversion ratio were collected. Two birds per replicate were randomly selected, weighed, slaughtered and properly dressed for carcass parameters such as live weight, plucked weight, dressing percentage, head, neck, wing weight, thigh weight, drumstick, organ weight and sensory evaluation was carried out. The result of the performance characteristics showed that there were significant differences (p<0>0.05). On acceptability, meat obtained from treatment with 300g/100kg feed had the highest value (8.30) while the least was obtained from the control treatment (7.00).All the meat samples affirmed the reliability of Ocimum gratissimum as a good supplement in broilers diet.It was concluded that the inclusion of Ocimum gratissimum in the diets of broiler chicken has no detrimental effect on performance and carcass characteristics but improved the livability of the birds and acceptability of the meat.