Sputum cytology is an important investigation in the diagnosis of lung malignancies.The study was thus aimed at evaluating the role of sputum smears in bronchogeniccarcinomas. A total of 80 cases were included in the study. The positivity rate forvarious subtypes was squamous cell carcinoma (50%), large cell carcinoma (50%),non-hodgkins lymphoma (50%), secondaries (40%), small cell carcinoma (37.5%),hodgkins lymphoma (33.33%) and adenocarcinoma (30.77%). Peripherally locatedmalignant lesions have a reduced chance of being expectorated out in the sputum.Early morning samples are the best sample for diagnosis.It was thus concluded that Sputum cytology is important as an investigation to becarried out simultaneously with other techniques in detecting occult malignancies.KEY WORDS: Sputum Cytology, Bronchogenic Carcinoma