Purpose Haemangiomas are one of the most common lesions of the head and neck. However, sinonasal haemangiomas are extremely rare with only a handful of case reports describing them arising from the nasal septum and maxillary sinus. Here, we present the first case to our knowledge, of a cavernous haemangioma arising from the frontoethmoidal complex. Methodology A 93-year-old female presented to the ENT clinic after a debulking procedure of a cavernous haemangioma 18-months prior. She had intermittent right dry eye and facial pain. Her main complaint, however, was the physical obstruction of the lesion on her vision due to its size and location. On examination, there was a large firm and tender lesion over the nasal bridge on the right. Flexible nasendoscopy was normal. CT scan revealed a 4x3x2cm mixed density mass occupying much of the right ethmoid air cells with erosion of the bone superiorly and projection into the frontal sinus. There was also bony erosion laterally with projection into the orbit and impingement upon the right globe. Results The patient underwent an excision of the haemangioma via an external approach. The lesion was located in the right frontoethmoidal complex extending to the posterior table of the frontal sinus, however not breaching it. The lesion was removed in whole and histopathology confirmed a cavernous haemangioma. The patient was reviewed in clinic a month later with good recovery and resolution of all symptoms including a normal vision. Conclusion Cavernous haemangiomas of the sinonasal cavity are extremely rare, however should be considered in vascular appearing lesions.