Ilex cookii (Cook's holly or te) is a species of plant in the family Aquifoliaceae.

It is a federally listed endangered species of the United States.

[3] This tree is only known from a single specimen and a few seedlings in the cloud forests on Cerro de Punta and Monte Jayuya, both at Toro Negro State Forest in Puerto Rico.

[1][4] Other specimens were probably destroyed when a communications tower was installed on Cerro de Punta.

[5] It was additionally listed as an Annex I species to the Specially Protected Areas and Wildlife Protocol of the Cartagena Convention in 1991.