Currently, propranolol, is the first line treatment for problematic infantile hemangioma (IH) management. However, serious side effects have been reported. For that reason, atenolol, a hydrophilic selective beta-1 blocker with the potential for fewer side effects, has been explored. A descriptive, observational case series study of 30 patients between the ages one to 5 months with superficial, deep, or mixed IH was conducted between January 2016 and December 2017. Oral atenolol was administered using a single once daily dose of 1mg/kg, which was adjusted for weight gain each month. The IH was assessed using the Hemangioma Activity Score (HAS) at initiation of treatment, four months, and 9 months of age and improvement percentage was calculated at four and nine months of age. A total of 25 patients completed three evaluations. The baseline, four-month, and 9-month HAS were 4.6, 2.39, and 0.65, respectively. Mean improvement percentage at four months of age was 46.76% and at 9 months of age was 85.65%. No side effects were reported. This study suggests atenolol as an effective treatment for IH in almost all cases, especially in patients who initiated treatment before three months of age. It was well tolerated in all our cases.