Objective: This study aimed to evaluate the efficacy of botulinum toxin type (A) for the neuromuscular correction of gummy smiles to provide consistent, statistically significant, and esthetically pleasing results. Study design: This study included 20 patients complaining from gummy smile caused by hyperactive lip elevator muscles, 7 males and 13 females between the ages of 14 and 32 years. Diagnosis of the cause of gummy smile was made carefully to exclude any other causes than hyperactive muscles. The distance between the upper lip margin and the gingival margin of the upper central incisors was measured before injecting the toxin. All patients received 5 units of botulinum toxin type A bilaterally, divided evenly over two injection points. The first injection point was at the overlapping point of levator labii superioris aleque nasi and levator labii superioris muscles. The second injection point was at the overlapping point of levator labii superioris and zygomaticus minor muscles. Patients are assessed at 2 weeks, 4weeks, 12 weeks and 24 weeks following injection. Results: there was a statically significant reduction in the gingival display upon smiling. Conclusion: Botulinum toxin type A (BTX-A) was safe and efficacious for the neuromuscular correction of gummy smiles caused by hyperactive lip elevator muscles.