Paraneoplastic syndromes are the rarest neurological complications in patients with cancer. The neurological paraneoplastic syndromes that are mainly associated with breast cancer are subacute cerebellar degeneration, paraneoplastic retinopathy, opsoclonus-myoclonus syndrome, lower motor neuron diseases and Stiff-man syndrome. The aim of this paper is to briefly outline these paraneoplastic neurological syndromes and consider their relation to breast carcinoma.