The Odedi or Bougainville Bush-warbler (Cettia haddeni) is a bird species initially placed in the "Old World Warbler" assemblage, but nowadays moved with its congeners to the new cettiid warbler family.

It was described as new to science in 2006. This bird is hitherto only known from the Crown Prince Range on the island of Bougainville in the Solomon Islands, Papua New Guinea.

Its status was first evaluated for the IUCN Red List in 2008, being listed as Near threatened.