Mucormycosis is an opportunistic fungal infection that is rare but has a fatal course, occurs especially in patients with immunodeficiency, and is caused by fungi in the Zygomycetes class. Since the infection is generally caused by inhalation of spores, mostly the paranasal sinuses and lungs are affected. Diabetes mellitus and hematologic malignancies are the most common underlying diseases. It usually initiates like bacterial pneumonia, and its clinical and radiologic findings are nonspecific. Thus, a high index of suspicion is necessary. Combined medical and surgical treatment methods are recommended. We aimed to present a case of pulmonary mucormycosis with a course of endobronchial involvement.