The Jaguar B99 is a concept car designed by the Italian design house Bertone to celebrate its 99th anniversary. Unveiled at the 2011 Geneva Motor Show, it was proposed as a successor to the Jaguar X-Type, though Jaguar ultimately chose not to put it into production.

The B99 featured rear-hinged "suicide" doors and lacked a B-pillar, creating a wide-open, elegant entryway into the cabin.

The concept used a hybrid system featuring a 1.4-liter petrol engine acting as a range-extender for two 201bhp electric motors, producing a combined 570bhp.