Gliomas of the optic pathways that occur in adults are rare tumours. The tram-track-like calcification of the optic nerve, which classically occurs with meningioma, has not been reported so far in optic pathway gliomas. Here, we present a case of high-grade glioma of the optic pathway with tram-track-like calcification of the optic nerve in a 42-year-old male. This case enhances our understanding of the MRI features of adult malignant optic pathway glioma.