A Polish museum has criticised US e-commerce giant Amazon for selling Christmas ornaments with images of the Nazi German death camp Auschwitz-Birkenau, calling them inappropriate.

The museum at the site of the former camp in southern Poland tweeted screenshots of the items showing train tracks and barracks and requested that Amazon remove them from their site.

"Selling 'Christmas ornaments' with images of Auschwitz does not seem appropriate. Auschwitz on a bottle opener is rather disturbing and disrespectful," the museum tweeted.

Those include a "disturbing" mousepad and a ceramic Christmas ornament with a freight car used for deporting Jews for extermination.

Amazon said the products had been removed.

A spokesperson added that: "All sellers must follow our selling guidelines and those who do not will be subject to action, including potential removal of their account."

Nazi Germany set up the death camp after occupying Poland during World War II.

The Holocaust site has become a symbol of Nazi Germany's genocide of six million European Jews, with one million killed at the camp between 1940 and 1945.

More than 100,000 non-Jews also died there, according to the museum. An estimated 232,000 of the victims were children.