Mordecai Leib Bisliches (Hebrew: מרדכי ליב בן משה ביסליכיס; 1786–1851) was an Austrian bibliophile and rabbinic scholar.
He was married at the age of thirteen, ultimately divorced his wife, and, after the death of his children, went to Paris.
There he was very prosperous in business, devoting his leisure to the study and publication of Hebrew manuscripts in the Paris Library.
Returning to his birthplace, he prepared for publication a number of works with the aid of his brother Ephraim.
[1] In 1846 Bisliches and Salomon Gottlieb Stern [Wikidata] sold 111 manuscripts in 102 volumes to the Archduchess Marie Louise of Parma, which were added to the De Rossi Collection in the Biblioteca Palatina.