Count Károly Reviczky () de Revisnye (; 4 November 1737 â 10 August 1793), also known as Charles de Reviczky, was a Hungarian nobleman, bibliophile and orientalist. He was eminent for his classical taste and erudition.
Reviczky was born in Revià ¡né in 1737, present day Slovakia. He served as Envoy Extraordinary from the emperor of Hungary to the King of Great Britain, and as Austrian Minister at Florence.
With great judgment and at a considerable expense, he collected a classical library, which he sold during his residence in London to George Spencer, 2nd Earl Spencer of Althorp. The purchase included an annuity for Reviczky's life, and it formed the basis of Spencer's collection. Of this collection the Count printed and distributed a descriptive catalogue under the title of ' (1784, 8 volumes). It has likewise the following French title, '. Prefixed to the work (which consists of about 300 pages) is a letter of ten pages, in French, addressed to M. L'A. D**** (M. l'Abbé Denina). Besides this work, Reviczky published an essay in French on Turkish Tactics (Vienna, 8 volumes), and ', (Vienna, 1771, 8 volumes).
Reviczky was made a Commander of the Order of St. Stephen. He died at Vienna in August 1793.