Daimler Double-Six may refer to either of two different series of Daimler V12 engines or to a car produced by Jaguar Cars under the Daimler nameplate.

Engines made 1926 to 1938

7.1-litre 50 drophead coupé
by Corsica of Cricklewood 1931 example
Daimler Double-Six Engine

Engines made 1972 to 1997

6.0-litre HE 1994 example
Daimler Double-Six Engine

Cars

Daimler Double-Six SIII (1988 example)
Daimler Double-Six 1972-1997
Daimler Double-Six XJ81 1993-1994
Daimler Double-Six X305 1994-1997