Walter Baier is an Austrian politician and economist based in Vienna. He was elected the President of the Party of the European Left in December 2022. Baier was the National Chairman of the Communist Party of Austria (KPÖ) from 1994 to 2006. He was an Editor of the Austrian magazine Volksstimme. From 2007 to 2022, he was a Political Coordinator and a Board Member of the transform! europe EUPF.