Eliza Pratt Greatorex (December 25, 1819 – February 9, 1897) was an Irish-born American artist who was affiliated with the Hudson River School.

[3][6] In 1872, Greatorex published The Homes of Oberammergau, an account of her three-month visit to the village and its passion-play, illustrated by twenty heliotype prints of pen and ink drawings.

Greatorex and her daughters befriended Impressionist painter Alfred Sisley, whom they helped to support by furnishing their home with his works.

With an eye to America's upcoming centennial, in 1875 Greatorex published Old New York from the Battery to Bloomingdale, a book of drawings of historic buildings demolished during the post-Civil War real estate development of Manhattan, with a commentary by her sister Matilda Despard, and an introduction by William Cullen Bryant.

[6] In 1868 Greatorex was elected an associate of the National Academy of Design, becoming the second woman to receive that recognition after Ann Hall, who had died some six years earlier.

[6] Greatorex belonged to a circle of feminists that included Susan B. Anthony, Mary Louise Booth, and Sarah Jane Lippincott, (alias Grace Greenwood).

She and her daughters are buried in the local cemetery at Moret-sur-Loing, Greatorex's work was included in a 2010 exhibition by the Thomas Cole National Historical Site and Hawthorne Fine Art entitled Remember the Ladies: Women of the Hudson River School.

[8] A definitive biography; Restless Enterprise: The Life and Art of Eliza Pratt Greatorex by Dr. Katherine E. Manthorne was published in 2020 by the University of California Press.