Naja christyi (formerly Boulengerina christyi ), commonly known as the Congo water cobra or Christy's water cobra, is a species of venomous snake belonging to the Elapidae family, and native to Sub-Saharan Africa. This species was formerly in the genus Boulengerina, but more recent research by Wallach et al. has shown that Boulengerina is actually a subgenus and Boulengerina christyi is a synonym of Naja christyi. This species has no known subspecies.