Katona Nándor or Nathan Ferdinand Kleinberger (12 September 1864 Szepesófalu (Spišská Stará Ves), Kingdom of Hungary now Slovakia – 1 August 1932, Budapest, Hungary) was a Hungarian Jewish painter.
One of seven children of a dismally poor Jewish family he was discovered as a prodigy, brought up and instructed in painting by László Mednyánszky. He later studied in Budapest and Paris, and traveled extensively throughout Western Europe.
Most of his works depict scenes of nature from his home region, the Szepes county (Spiš) in particular views of the Tatra Mountains and the area of Késmárk (Kežmarok), which he considered his home town despite having spent much of his life in Budapest.
- Raphael Patai (2000). Apprentice in Budapest. Lexington Books. p. 463. ISBN 0-7391-0210-9. Retrieved 2008-10-30.
- Dan Rottenberg (1986). Finding Our Fathers: A Guidebook to Jewish Genealogy. Reprint of a work published in 1977 by Random House, New York. p. 257. ISBN 0-8063-1151-7. Retrieved 2008-10-30.
- Anna Ondrušeková Ferdinand Katona 1864–1932 publ. Tatranská Galéria, Poprad, 2004.
- Biography in Magyar Életrajzi Lexikon