In attempting to rectify the common mistake of considering the heterogeneous group of diseases with the common symptom of ocular hypertension as a single disease entity with various stages, I have suggested an etiologic classification of glaucoma1 based on clinical investigation. One of the diseases included in that classification is listed as hemorrhagic glaucoma, a term which has been applied to the form of glaucoma occurring in eyes with occlusion of the central retinal vein or its tributaries, in which repeated hemorrhages into the anterior chamber are frequently seen. The term should also include glaucoma associated with diabetic rubeosis iridis and perhaps glaucoma following massive retinal hemorrhages and hemorrhages into the vitreous. This paper is submitted to point out the common etiologic factors of this group of conditions and the justification for the term hemorrhagic glaucoma, as well as to indicate its differential diagnosis from other forms of glaucoma