Rolls-Royce SZ and Bentley SZ refers to several different Rolls-Royce and Bentley car models produced 1980–2003 by Rolls-Royce Motors (1980–1999) and Bentley Motors Limited (1998–2003).
The SZ series succeeded the SY series with Rolls-Royce Silver Shadow and Bentley T-series produced from 1965 to 1980.
The "SZ" was originally an internal code name at Rolls-Royce Motors. All SZ cars has the letter Z at the fourth position in the Vehicle Identification Number (VIN) and are powered by the Rolls-Royce – Bentley L Series V8 engine. The SZ was introduced to the media in Nice ahead of its official Geneva Motor Show debut.