John Michael Attenborough (1 January 1928 – 9 November 2012) was an English executive in the motor industry and then a financial advisor.

He was the youngest brother of Richard, Lord Attenborough, an English director and actor, and Sir David Attenborough, an English naturalist.  After National Service, he studied modern languages at the University of Cambridge.

He worked in the motor trade and became a managing director of Mann Egerton, heading their Rolls-Royce division inBerkeley Street. He then became the head of the British operations of Italian car manufacturer, Alfa Romeo. He finally ran a distribution business for motor cars in Dorset before retiring from the motor trade and becoming a financial advisor.

He had progressive supranuclear palsy and died at home in November 2012.