János Zsupánek or Zsupanek (Slovene: Janoš Županek; January 6, 1861 – March 11, 1951) was a Slovene writer and poet in Hungary, son of the poet and writer Mihály Zsupánek.
Zsupánek went on pilgrimages to Graz, Mariazell, Maribor, and the Slovene Hills and he became familiar with many hymns in German, Hungarian, and Latin, as well as hymns in the Slovene Hills dialect, closely related to the Prekmurje dialect.
In 1908, he published his prayer book and hymnal Vu Iméni Ocsé, i Sziná, i Dühá, szvétoga Ámen (In the Name of the Father, and the Son, and the Holy Spirit, Amen).
In 1910 he published the Prekmurje dialect hymnal Mrtvecsne peszmi (Dirges).
Its publication was supported by Miklós Kovács and József Konkolics from Šalovci.