Onthophagus unifasciatus, is a species of true dung beetle native to India and Sri Lanka.

Elytra bright yellow, and decorated with a broad irregular black median band.

Pronotum strongly punctured which is obliquely retuse in front.

[5] The species is identified as a cause for the disease Scarabiasis,[6][7][8] where specimens were collected from human faeces.

[9] There were many reports of children mainly between the ages of 1 and 5 years passing live beetles with their faeces in Sri Lanka.