John Allen Cowell Kennedy Nivison CBE JP (22 March 1910 – 5 December 2003) was a Manx politician who served as President of the Legislative Council of the Isle of Man.
He continued as a Member of the Council until his retirement in 1988, having completed 40 years of service.
He was appointed a Commander of the Order of the British Empire in the 1979 New Year Honours.
He was also for some time, Chairman of the Isle of Man Branch of the Commonwealth Parliamentary Association.
Nivison was a man well recognised in the community, as well as in Tynwald, and he was greatly involved in many aspects of Island life, being the chairman of many a country eisteddfod, an Onchan Commissioner and Captain of the Parish of Onchan.