Hildesheimer is a German surname. Notable people with the surname include:
Azriel Hildesheimer (1820–1899), German rabbi and founder of the Hildesheimer Rabbinical Seminary Wolfgang Hildesheimer (1916–1991), German author, great-grandson of Azriel
Fictional characters Matthias Hildesheimer, is the main character in the The Strongest Sage with the Weakest Crest Anime series.
See also Hildesheim, a city in Lower Saxony, Germany