Zanthoxylum davyi, the forest knobwood, is a dioecious species of plant in the family Rutaceae.

It is native to the Western Cape, Eastern Cape, KwaZulu-Natal, Mpumalanga and Limpopo provinces of South Africa, western Eswatini and eastern Zimbabwe.

It occurs in coastal and mistbelt forests, and grows some 10 to 24 m tall.

[1] Their sturdy, straight trunks are heavily armed with hornlike knobs.

[1] Similar species are the smaller Z. capense which occurs in mostly dryer inland regions, and Z. leprieurii which is native to sand forests of subtropical lowlands.