Kallstadt is a village in the Palatine part of Rhineland-Palatinate, one of Germany's 16 federal states. It is part of the Rhine-Neckar Metropolitan Region whose largest city is Mannheim, Germany's 22nd largest city. During much of the 19th century, it was part of the Kingdom of Bavaria. It has gained international media attention as the ancestral home of the related Heinz and Trump families, two prominent business and political families in the United States.