Peter Altmeier (12 August 1899 – 28 August 1977) was a German politician (Zentrum, later CDU). From 1947 to 1969, he was the Minister President of Rhineland-Palatinate. He served as the President of the Bundesrat in 1954/55 and 1965/66. He was born in Saarbrücken and died in Koblenz. He was the longest governing German Minister-President in one single state—longest at all was Bernhard Vogel.