Ohara Koson (also Ohara Hōson, Ohara Shōson) (Kanazawa 1877 – Tokyo 1945) was a Japanese painter and woodblock print designer of the late 19th and early 20th centuries, at the forefront of shinsaku-hanga and shin-hanga art movements.

Ohara Koson was famous as a master of kachō-e (bird-and-flower) designs. Throughout a prolific career, in which he created around 500 prints, he went by three different titles: Ohara Hōson (小原豊邨), Ohara Shōson (小原祥邨) and Ohara Koson.