Ernő Bánk (1883, Szalmatercs - 1962, Budapest) was a Hungarian painter and teacher noted for his miniature portraits.
Bánk trained as a secondary school teacher and in 1915 obtained a doctorate in geography and history from Budapest Pázmány Péter University.
He also studied painting under Henrik Pap and Béla Sándor at the School of Applied Arts.
Between 1914 and 1918 he painted portraits for the 30th Infantry Regiment that were shown at the Museum of Military History.
Exhibitions of his work were held in the Hungarian National Gallery in 1978 and in the Budapest Historical Museum in 1984.