Aladár Körösfői-Kriesch (29 October 1863 – 16 June 1920) was a Hungarian Art Nouveau painter.

He was born in Buda, the son of hydro-biologist and zoologist János Kriesch.

He was a co-founder with Sándor Nagy of the Gödöllő Art Colony, which introduced Art Nouveau style (also called Secession) in Hungary.