Vilmos Aba-Novák (Hungarian: Aba-Novák Vilmos, til 1912: Hungarian: Novák Vilmos; March 15, 1894 – September 29, 1941) was a Hungarian painter and graphic artist. He was an original representative of modern art in his country, and specifically of its modern monumental painting. He was also the celebrated author of frescoes and church murals at Szeged and Budapest, and was officially patronized by the Hungarian nobility.
Novák was born in Budapest, Hungary, where he would also die. His father was Gyula Novák, and the mother was Rosa Waginger (Hungarian: Waginger Róza from Vienna.
After studying at the Art School until 1912, he began work under Adolf Fényes. Between 1912 and 1914, Novák studied at the College of Fine Arts in Budapest. Completing his service in the Austro-Hungarian Army on the Eastern Front during World War I, he took up drawing with Viktor Olgyai. Aba Novak was particularly interested in circuses and the village fair marketplaces which appeared in his early paintings with the vivid colours of Expressionism and the Italian novocento.
Between 1921 and 1923, he spent his summers with the group of artists in Szolnok and Baia Mare (Nagybánya), Romania (see Baia Mare School), and was first exhibited in 1924. He was sent by the Hungarian Academy as a Fellow on a scholarship to Rome (1928 and 1930), and became a renowned representative of the so-called "Roman School" in Hungarian painting.