Omoglymmius ferrugatus is a species of beetle in the subfamily Rhysodinae. It was described by R.T. Bell & J.R. Bell in 1988. It is known from Potil Kecil in Banggai Archipelago, east of Sulawesi (Indonesia).
Omoglymmius ferrugatus holotype, a male, measures in length and was collected under bark of a fallen tree.