Heidenreich is a German surname which may be translated as "Land of the Heathen," or "Power of the Heathens," or "Realm of the Heathens". Notable people with the surname include: The original germanic meaning was: a person of power and wealth, see also: http://wiki-de.genealogy.net/Heidenreich_(Familienname)

• Heidenreich of Chełmno, first bishop of the Bishopric of Chełmno, 1245–1263
• Adolf Heidenreich (1897–1958), German politician (SPD)
• Carl Heidenreich, German painter
• David Elias Heidenreich (1638–1688), German writer
• Elke Heidenreich (born 1943), German TV journalist and presenter, novelist, librettist, literary critic
• Fritz Heidenreich (1895–1966), German sculptor
• Gert Heidenreich (born 1944), German writer
• Gustav Heidenreich (1819–1855), German painter
• Hans-Jürgen Heidenreich (born 1967), German footballer
• Herbert Heidenreich (born 1954), German footballer
• Jakub Heidenreich, Czech footballer
• Jon Heidenreich (born 1972), American professional wrestler
• Kaspar Heidenreich (1510–1586), German reformer
• Ludwig Heidenreich von Callenberg (died 1637), German officer
• Maximilian Heidenreich (1967–2024), German footballer
• Walter Heidenreich (born 1949), German preacher

Heydenreich is a variation of the name. Notable people include:

• Gustav Heinrich Heydenreich († 1897), German entomologist
• Karl Heinrich Heydenreich (1764–1801), German philosopher
• Ludwig Heinrich Heydenreich (1903–1978), German art historian
• Michał Heydenreich (1831–1886), Polish general

• Heidenreichstein in Austria