| Aladár Körösfői-Kriesch | |
| Birth Date: | 29 October 1863 |
| Birth Place: | Buda, Hungary (today part of Budapest) |
| Death Place: | Budakeszi, Hungary |
| Nationality: | Hungarian |
| Field: | Art Nouveau painter |
| Movement: | Gödöllő Art Colony |
| Patrons: | Bertalan Székely Károly Lotz |
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.