Seibt is a surname. Notable people with this surname include:
Bastian Seibt (born 1978), former German rower Hellmut Seibt (1929-1992), Austrian figure skater Karl Heinrich Seibt (1735-1806), German theologian and teacher Kurt Seibt (1908-2002), German politician Naomi Seibt (born 2000), German political activist Sophie Seibt (1812-1889), German composer