Ectopic cervical thymic tissue is rarely reported in medical literature, but it should be included in the differential diagnosis of neck masses, especially in children. It occurs in the line of descent of the thymus from the angle of the mandible to the superior mediastinum. A preoperative diagnosis is seldom considered and is often misdiagnosed as a possible tumor or a lymph node. We present a case of a 2-month-old infant with an asymptomatic enlarging right neck mass. Patient underwent complete excision of the mass.