Oriulus venustus is a species of millipede in the family Parajulidae. It is found in North America.
Adults are around 19 to 26 millimeters in length and 1.5 to 2.5 millimeters wide. Males of this species can be identified by their enlarged sternum 8 that extends dorsally into the body cavity and their sigmoid, crossing gonopodal telopodites.
Oriulus venustus covers most of North America north of Mexico and east of the Rocky Mountains, though its distribution becomes sporadic in the south-eastern United States.