Thompson Peak is a mountain (a high point on a tall granite ridge) in Trinity County, California.

It is the highest point in a ridge that also features Wedding Cake, another well-known Trinity Alps peak.

(Quote from Per SP member Ed Cooper) "It is incorrect to say that there is no longer glacial activity in the area.

Thompson Peak has steep north and east faces and a gentle southwest slope.

It is usually climbed from Canyon Creek Trail, ascending the class 2-3 South Ridge from the east.