Yew is a common name given to various species of trees.

Phylogeny of the Taxaceae and Cephalotaxaceae
Foliage of Mexican yew

The name is most prominently given to any of various coniferous trees and shrubs in the genus Taxus:

The name also is used for any of various coniferous plants in the families Taxaceae and Cephalotaxaceae:

Various coniferous plants in the family Podocarpaceae, which are superficially similar to other yews, are also known by this name: