Orocrambus simplex is a moth in the family Crambidae.

[2][3] It is endemic to New Zealand,[4] where it has been recorded in Westland, Nelson Province, the central part of the North Island and the coastal area of southern Hawkes Bay.

[5] The habitat where this species lives consists of tussock grasslands.

[5] Adults have been recorded on wing from November to February.

This Crambinae-related article is a stub.