Borchardt is a surname. Notable people with the surname include:Alice Borchardt (1939–2007), American writer of historical fiction, fantasy and horror Carl Wilhelm Borchardt (1817–1880), German mathematician Curtis Borchardt, American basketball player Diane Borchardt, American teacher and criminal, focus of the 1995 film Seduced by Madness Dietrich Borchardt (1916–1997), Australian librarian and bibliographer Erich Borchardt (1913–1944), Oberfeldwebel in the Wehrmacht Francis J. Borchardt, American politician Georges Borchardt, American literary agent Herbert Borchardt (1914–1944), Leutnant of the Reserves in the Wehrmacht Hugo Borchardt (1844–1924), German firearms inventor and engineer Jan-Christoph Borchardt, German open source interaction designer Jon Borchardt, American football guard Julian Borchardt (1868–1932), socialist activist Karol Olgierd Borchardt (1905–1986), Polish writer and captain Karolina Borchardt (1905–1995), Polish artist and aviator. Knut Borchardt (1929–2023), German researcher Ludwig Borchardt (1863–1938), German Egyptologist Mark Borchardt, American independent filmmaker Paul Borchardt (1886–1953), German archaeologist Siegfried Borchardt (1953–2021), German neo-Nazi politician Simone Borchardt, German politician Susan King Borchardt, American basketball player