Nyaribari Masaba is an electoral constituency in Kenya. It is one of nine constituencies in Kisii County. The constituency was established for the 1988 elections.
Masaba South Sub-county shares common boundaries with Nyaribari Masaba Sub-county. It is in the sub-county where the Kisii County part of Keroka is located. The Sub-county is headed by the sub-county administrator, appointed by a County Public Service Board.