Thirty patients with advanced non-small cell bronchogenic carcinoma were treated with cis-platin, 75 mg/M2 weekly for three weeks, then every three weeks. Eighteen were ambulatory, 22 had distant metastases, 14 had prior irradiation, and none had prior chemotherapy. Ten patients (33%) had objective remissions lasting a median of three months. Responders lived a median of five months, compared to three months for nonresponders. Transient mild azotemia was noted in twelve patients. Cis-platin has definite but modest activity in non-small cell bronchogenic carcinoma.