What is "sieff"

Sieff may refer to:

• Adam Sieff, Communications Director at Dune Music, and a former Sony Music Director of Jazz
• Israel Sieff, Baron Sieff (1889–1972), British businessman
• Jeanloup Sieff (1933–2000), fashion photographer
• Joseph Sieff (1906–1982), businessman and British Zionist
• Marcus Sieff, Baron Sieff of Brimpton OBE (1913–2001), Jewish British businessman, chairman of Marks & Spencer from 1972 to 1982