سفانتِ أَوغُسْتْ أرهِنْيُوس (بالسويدية: Svante August Arrhenius) هو عالم سويدي ولد في 19 فبراير 1859 وتوفي في 2 أكتوبر 1927 في ستوكهولم.
Svante August Arrhenius (19 February 1859 – 2 October 1927) was a Swedish scientist, originally a physicist, but often referred to as a chemist, and one of the founders of the science of physical chemistry.