OBJECTIVE: To describe the surgical outcomes, audiology evaluations, and speech after bone anchored hearing aid (BAHA) implantation surgery in 2 children aged between 2-3 years. CASE REPORT: The 2 boys were fitted with a conventional bone amplification device without any effective results after systematic use. For evaluation, the IT MAIS and MUSS questionnaires were administered pre- and post-operatively and system testing was performed with the BAHA softband. In addition, audiological and otorhinolaryngology evaluations were also conducted. After otorhinolaryngology evaluation, the tomography of the mastoid was determined using temporal bone measurements as a reference for the titanium pin. After analyzing the data, cochlear BAHA surgery was indicated. The first child who underwent surgery presented with Treacher Collins syndrome and received a unilateral device at age 2 years. The second child received a bilateral implant at age 3 years. The surgeon indicated that the speech processor would be activated after 5 months of surgery. Due to the postoperative results, the children were found to have shown adequate osseo integration of the titanium pin. Tests conducted after 3 months of use of the BAHA processor documented an overall improvement in the evaluation. CONCLUSION: The BAHA system can be safely used and will beneficial to children <4 years. Speech therapy using the Aurioral method and the BAHA system along with the effective participation of the family has led to the gradual development of auditory and language skills in these patients.