Natroun was a French Thoroughbred racehorse and sire. Owned and bred by the Aga Khan IV and trained by Alain de Royer-Dupre he won three of five races as a three-year-old in 1987. Unraced as a two-year-old he won two minor races in the spring before recording his most important success in the Prix du Jockey Club. In his two remaining races he ran well when fourth under top weight in the Prix Niel and finished unplaced in the Prix de l'Arc de Triomphe. He was retired from racing at the end of the year to stand as a breeding stallion but had very little success as a sire of winners in either Europe or Japan.