Siegbert is the given name of:
Siegbert Horn (born 1950), former East German slalom canoerSiegbert Hummel (1908-2001), Tibetologist and cultural historianSiegbert Salomon Prawer (born 1925), professor of German language and literatureSiegbert Tarrasch (1862-1934), noted chess player and teacherSiggi Wilzig (1926-2003), American businessman and Holocaust survivor