Rhinocerebral mucormycosis is an acute, rapidly progressing, and life-threatening condition that predominantly affects individuals with uncontrolled diabetes and those who are immunocompromised. One critical complication of this disease is the thrombosis of orbital vessels, which can be indicative of angioinvasiveness and predict the subsequent development of cerebral infarctions. In this context, we present a case series of patients with rhino-orbital mucormycosis who experienced complications due to internal carotid artery thrombosis. This case series highlights the severe vascular involvement associated with rhino-orbital mucormycosis and underscores the importance of early recognition and aggressive management to prevent catastrophic outcomes.