Omoglymmius sabah is a species of beetle in the subfamily Rhysodinae. It was described by R.T. Bell & J.R. Bell in 1993. It is known from Mount Kinabalu in Sabah, Malaysian Borneo. The type series was collected at elevations of 500m–900mm (1,600feet–3,000feetm) above sea level.
Omoglymmius sabah measure NaN2NaN2 in length.