This is a list of notable people who have or had motor neuron diseases, a group of rare neurodegenerative disorders that selectively affect motor neurons, the cells which control voluntary muscles of the body. This includes amyotrophic lateral sclerosis (ALS), progressive bulbar palsy (PBP), pseudobulbar palsy, progressive muscular atrophy (PMA), primary lateral sclerosis (PLS), spinal muscular atrophy (SMA) and monomelic amyotrophy (MMA), as well as some rarer variants resembling ALS.