István Kühár (Slovene: Števan Kühar) (August 28, 1887 – January 1, 1922) was a Slovene Roman Catholic priest, politician, and writer in Hungary, and later in Yugoslavia.

He was born in Gradišče, near Tišina, to József Kühár and Katalin Gombócz.

His brother János Kühar was also a writer that promoted Prekmurje Slovene.

Politically, Kühar favored the secession of the Hungarian Slovenes from Hungary and their autonomy in Slovenia.

After World War I, Kühar identified with Prekmurje Slovene in Yugoslavia.