Croton yecorensis is a plant species endemic to a small region the State of Sonora, Mexico.

The plant is known only from a mountainous region in the Sierra Madre Occidental in extreme eastern Sonora, only a few km from the line with Chihuahua.

All the known populations lie within 60 km of one another in open rocky areas in pin-oak woodlands at elevations of 1200–1700 m.[1][2] Croton yecorensis is a perennial herb or subshrub, sparingly branched, up to 100 cm tall.

Leaves are alternate, narrow and linear, up to 7 cm long but rarely more than 1.0 cm wide, covered with small stellate (highly branching) hairs.

Flowers and seeds are creamy yellowish.