Arthur Groenouw (27 March 1862 – 1945) was a German ophthalmologist born in Bosatz, a village near Ratibor.
He studied medicine in Breslau, and was an assistant to physiologist Rudolf Heidenhain (1834–1897) and ophthalmologist Wilhelm Uhthoff (1853–1927).
In 1892 he was habilitated for ophthalmology in Breslau, and in 1899 attained the title of professor.
In 1890 Groenouw described two different types of corneal dystrophy, of which he wrote about in an article titled "Knötchenförmige Hornhauttrübungen" (noduli corneae).
Later on, his findings on corneal dystrophy were classified as two separate syndromes: This article about a German person in the field of medicine is a stub.