Svein Richard Brandtzæg (born 23 December 1957, in Haugesund) is a Norwegian chemist and business executive.

He was appointed CEO of Norsk Hydro on 12 January 2009 after Eivind Reiten chose to resign from the position.

On 1 January 2014, Brandtzæg was appointed chairman at NTNU, by Per-Kristian Foss, who vacated the position upon becoming Auditor General.

[3] In his capacity as CEO of Norsk Hydro, Brandtzæg is a member of the European Round Table of Industrialists, a lobbying group of Europe's largest industrial companies.

[5] In 2019 he was succeeded as chief executive officer of Norsk Hydro by Hilde Merete Aasheim.