Peter Gansevoort Ten Eyck (November 7, 1873 – September 2, 1944) was an American politician who served as a U.S. representative from New York from 1913 to 1915 and again from 1921 to 1923.

He was chief engineer of the Federal Railway Signal Co. in 1903 and was later its vice president and general manager.

He served seven years in the New York National Guard as a member of the 3rd Signal Corps, a unit of the 3rd Brigade.

He was an unsuccessful candidate for reelection in 1914 to the 64th United States Congress, and was a delegate to the 1920 Democratic National Convention.

Ten Eyck declined to be a candidate for renomination in 1922 and operated Indian Ladder Farms, an agricultural enterprise in Altamont which is still owned by his family.