John Lionel Fegan (1862 – 29 December 1932) was a politician and coal miner in New South Wales, Australia.
Fegan was born in Chelmsford, Essex, England and worked as a coalminer in Northern Wales and Lancashire from the age of 16.
He married Ann Saggerson in February 1883 and they had one daughter and one son, but he abandoned them in 1896 to travel to New South Wales.
He was one of the Labor Party's first members of parliament, elected in 1891 to represent the seat of Newcastle in the New South Wales Legislative Assembly.
He chaired a select committee on working of collieries in 1894 and served on the royal commission on city railway extension in 1897.