The Nissan E series name was used on two types of automobile engines. The first was an OHV line used in the late 1950s and throughout the 1960s. The second was an OHC version ranging from 1.0 to 1.6 litres and was produced from 1981 till 1988. It was replaced by the GA engine series.

The Nissan J series are straight-4 and straight-6 gasoline internal combustion engines produced by Nissan from the 1960s through the 1980s. It is similar to the BMC B-Series engine that was built in Japan under licence as the Nissan 1H before being de-stroked to become the 1.0 L Nissan C and 1.2 L Nissan E engines, but wasn't a direct copy.