Pedicularis howellii is an uncommon species of flowering plant in the family Orobanchaceae known by the common name Howell's lousewort.

It is endemic to the Siskiyou Mountains of the Klamath Range in southern Oregon and northern California, where it grows on the edges of coniferous forests.

This is a perennial herb producing one or more stems up to 45 centimetres (18 in) tall from a long caudex.

The leaves are up to 20 centimetres (8 in) long, lance-shaped, and divided into many toothed oval lobes; those higher on the stem may be unlobed.

The plant probably relies on an adequate amount of snow in the area to keep enough moisture in the soil for germination the following season.