Josef Deimer (29 May 1936 – 12 August 2026) was a German politician who was a representative of the Christian Social Union of Bavaria. Between 1982 and 2000 he was a member of the Bavarian Senate. He was the mayor of his birthplace, Landshut, from 1970 to 2004.
Deimer died on 12 August 2026, at the age of 90.