We describe the first reported case of subclinical rhythmic electrographic discharge of adults (SREDA) during rapid eye movement (REM) sleep. This 48-year-old man, with a history of witnessed apneic spells, was sent for a baseline polysomnogram. Besides demonstrating obstructive sleep apnea, his study showed the occurrence of paroxysmal delta waves evolving into a theta frequency during REM sleep. A repeat polysomnogram with 16-channel electroencephalography confirmed SREDA in the bilateral temporal/parietal regions during REM sleep. This uncommon paroxysmal electrographic pattern should not be mistaken for seizure activity and is now recognized to occur in all stages of sleep, including REM.