Three kinds of snake angiotensins have been isolated from the incubation product of snake (Elaphe climocophora) kidney extract with homologous plasma. The amino acid sequences were deduced by dansyl method as follows : Asp-Arg-Val-Tyr-Val-His-Pro-Phe X-Asx-Arg-Val-Tyr-Val-His-Pro-Phe-Tyr X-Asx-Arg-Val-Tyr-Val-His-Pro-Phe-Tyr-Leu Tyrosine in position 9 was different from histidine of mammalian angiotensins or serine of the fowl. Position 5 was valine as in so-called bovine angiotensin.