Quercus sadleriana is a species of oak known by the common names Sadler's oak and deer oak. It is native to southwestern Oregon and far northern California in the Klamath Mountains. It grows in coniferous forests. It is placed in section Ponticae.

Description

Quercus sadleriana is an evergreen shrub growing 1 to 3 m tall from a root network with rhizomes. The leaves are reminiscent of chestnut leaves, oval with toothed edges and rounded, faintly pointed ends. The fruit is an acorn with a cap between 1 and 2 cm wide and a spherical or egg-shaped, round-ended nut up to 2 cm long.