Introduction: The lung adenocarcinoma is an invasive malignant tumor. Its visceral metastases are multiple. The gingival location is uncommon if not exceptional. Observation: We report the case of 66-year-old patient with a right cervical radiculopathology. Clinical examination objectified a superior vena cava syndrome with gingival tumor budding whose excisional biopsy found a location of a poorly differentiated and infiltrating carcinoma. The bronchoscopy revealed a tumor nodule obstructing the right mainstem bronchus with the histological study concluded as a moderately differentiated adenocarcinoma infiltrating. Conclusion: Gingival metastasis revealing lung adenocarcinoma is uncommon even exceptional. It may delay the diagnosis and management of already poor prognosis.