F0 or F00 may refer to: HMS Jervis (F00), a 1938 British Royal Navy J-class destroyer F-Zero, a futuristic racing video game series F00, Dementia in Alzheimer's disease ICD-10 code F0, Fundamental frequency BYD F0, a car manufactured by BYD Auto The lowest tornado intensity on the Fujita scale See also Foo, a metasyntactic variable