We report a patient with clinical and cytogenetic findings consistent with DiGeorge-velocardiofacial syndrome and aplasia of the left lung. To the best of our knowledge, this is the first reported case of DiGeorge-velocardiofacial syndrome associated with unilateral lung aplasia. Gadolinium enhanced three-dimensional magnetic resonance angiography demonstrated associated right-sided aortic arch and left pulmonary artery agenesis.