Triveniganj is an assembly constituency in Supaul district in the Indian state of Bihar. It is reserved for scheduled castes. It was an open seat earlier.OverviewAs per Delimitation of Parliamentary and Assembly constituencies Order, 2008, No. 44 Triveniganj (Vidhan Sabha constituency) (SC) is composed of the following: Triveniganj and Pratapganj community development blocks.Triveniganj (Vidhan Sabha constituency) is part of No. 8 Supaul (Lok Sabha constituency).