Introduction: Although breast carcinoma is the second most common cause of death in female patients, male breast carcinoma is rare. The incidence for male breast carcinoma is about 1 % in all breast carcinoma. Clinicians also reported that the incidence of male breast carcinoma is increase day by day. Aims and Objectives: The present study was undertaken to determine the efficacy of FNAC in the diagnosis of these lesions. Material and Method: The present study was undertaken over a period of five months in one of the tertiary care teaching hospital. After detailed clinical history and examination, fine needle aspiration is performed in all the five patients. Result: Our 60 % of the patients are present in 7th decade. Total five male patients having malignant breast lesion on cytological examination. The cytological diagnosis is confirmed by histopathological examination. Discussion: Fine needle aspiration cytology is considered as a rapid diagnostic tool as well as it is reliable and less traumatic and is also able to differentiate non neoplastic and neoplastic breast lesions. This procedure is technically easy to apply in small breast lesions. FNAC is most accurate when experienced cytologists are available. The size and extent (stage) of tumors are the most important factors in the prognosis for male breast cancer. Conclusion: FNAC is outdoor patient procedure with high diagnostic accuracy, sensitivity and specificity.