Townsend Daniel Cock (December 3, 1838 – June 19, 1913) was an American farmer, banker and politician from New York.
He was born and died on the family farm in Locust Valley, then in Queens County, now in Nassau County, New York.
He attended the common schools, and then looked after the family farm.
In 1858, he married Jane Deall Latting.
He was Supervisor of the Town of Oyster Bay for several terms beginning in 1867.