What is "seetzen"

Seetzen is a German surname. Notable people with the surname include:

• Heinrich Seetzen, often known as Heinz Seetzen (1906–1945), German SS officer and Holocaust perpetrator
• Helge Seetzen (born 1978), German technologist, businessman and entrepreneur
• Ulrich Jasper Seetzen (1767–1811), German explorer