Cervical chondromesenchymal hamartoma (CMH) is a rare, benign tumor that typically occurs in the soft tissues of the neck. We present a case of a 4-year-old male child who presented with a slowly expanding, painless left paramedian neck mass. Imaging studies revealed a well-circumscribed, lobulated solid lesion with a heterogeneous appearance, extending from the left thyroid lobe to the upper mediastinum. The mass was completely excised and histopathologically diagnosed as a CMH. This case highlights the importance of considering this rare entity in the differential diagnosis of a neck mass in a child. The imaging characteristics and histopathological findings are discussed, and the treatment and outcome are reported. This case report adds to the limited literature on cervical CMH in children and emphasizes the importance of complete surgical excision as the treatment of choice.