John Constable Gregory (17 August 1842 – 28 June 1894) was an English first-class cricketer active 1865–71 who played for Middlesex and Surrey.
He was born in Marylebone and died in Weymouth.
He was a righthanded batsman and was the captain of Surrey in 1871.
He played in 23 first-class matches.
This biographical article related to an English cricket person born in the 1840s is a stub.