Baron István Andrássy de Csíkszentkirály et Krasznahorka (1650–1720) was a Hungarian Kuruc general and nobleman, member of the old aristocratic Andrássy family.

He became commander of the Kuruc armies in the areas between Danube and Tisza (in Hungarian: Duna-Tisza köze).

Andrássy participated in the Battle of Győrvár on 6–7 June 1706.

He capitulated before Imperial General Löffelholz during the Siege of Lőcse (today: Levoča, Slovakia) on 13 February 1710.

His younger brother was György Andrássy, also a Kuruc general, and founder of the monoki (de Monok) branch.