Objectives: Basilar apex aneurysms constitute 5-10% of all intracranial aneurysms. Endovascular and surgical methods are used to treat theseaneurysms. Surgical treatment is the gold standard for complete occlusion. Different surgical approaches may be applied depending on themorphological structure of the aneurysm.Materials and Methods: Thirty-eight basilar apex aneurysms were detected in our institution between October 2017 and January 2020. Sixteenof these patients underwent surgical treatment. The demographic characteristics, angiographic properties, surgical method applied, Glasgow comascores and Modified Rankin scores (mRS) of the patients were recorded.Results: Five of the patients were male, 11 were female and the average age was 48.3 years (age range: 20-74 years). While insidental was detectedin four of the patients, 12 of them applied with subarachnoid hemorrhage (SAH). As a surgical operation, to nine of them Pterional, to two of themPretemporal and five of them fronto orbitozygomatic (FROZ) approach were applied. The aneurysm was clipped in all of the patients. In one patient,because the dome of the aneurysm could not be completely closed, wrapping was done. Follow-up angiograms showed that complete occlusion wasmaintained in all of the aneurysms except the one with wrapping. Two of the patients died. In the follow-up for 2-16 months for the remaining 14patients, the mRS was 0 in five of the patients, one in six of the patients, two in one of the patients and three in two of the patients.Conclusion: Basilar apex aneurysms are rare. Various complications may be encountered during endovascular and surgical treatment. Surgicaltreatment is the superior option to ensure occlusion. Different surgical approaches may be chosen depending on the location and morphologicalstructure of the aneurysm