Quercus vaccinifolia is a species of oak tree found in Mexico and Guatemala. It is commonly known as the "pin oak" or "live oak" due to its evergreen foliage and small, pin-like leaves. Other synonyms for Quercus vaccinifolia include the "vaccinium oak," "huckleberry oak," and "tecolote oak." These names are derived from the tree's association with the Vaccinium genus of shrubs that are commonly found growing in the understory beneath Quercus vaccinifolia. Despite its small stature, this oak species provides important habitat and food resources for a variety of wildlife species including birds, mammals, and insects.