Castilleja christii is a rare species of flowering plant in the family Orobanchaceae known by the common name Christ's Indian paintbrush.

It is endemic to Idaho in the United States, where there is a single population on Mount Harrison in the Albion Mountains in the Minidoka Ranger District of Sawtooth National Forest.

It contains many lance-shaped yellow or orange bracts and flower corollas 2 to 3 centimetres (0.79 to 1.18 inches) long.

[1] This plant grows near the mountain summit at an elevation of 9,100 feet (2,800 metres),[2] where deep snow accumulates and sometimes lasts into the summer or year-round.

The main threat to the species is habitat loss, which has occurred with the construction of roads in the area.