Obiaruku is an Ukwuani town in Delta State, Nigeria.It was founded by the people of Eziokpor and Umuebu origin in Delta State.

Obiaruku is the headquarter of Ukwuani Local Government Area (LGA), Delta State, Nigeria.

It is one of the major homeland of the Ukwuani speaking(akashiada) people.

The Okpala-Uku of Obiaruku is the oldest male in the town.

The Okpala-Uku has his cabinet made up of Chiefs (Inotu) including the Onotu-Uku (traditional prime minister), Ugo (Speaker), Onueze etc.