Clark Greenwood Voorhees (1871 – 1933) was an American Impressionist and Tonalist landscape painter and one of the founders of the Old Lyme Art Colony.

In 1897, Voorhees traveled to Europe, studying with Benjamin Constant and J. P. Laurens at the Académie Julian in Paris[1] and spending time in the French village of Barbizon as well as in the Netherlands.

In 1896, he returned with his mother and sister, who stayed at an informal boarding house run by Florence Griswold.

He was awarded a bronze medal at the 1904 St. Louis Exposition and in 1905 received one of the National Academy's three Hallgarten Prizes, honoring the best three oil paintings produced in the United States by artists under the age of thirty-five.

His granddaughter, Janet Fish, is a still life painter[2] with works in the permanent collection of many museums.