Mizrokh (Misroch) Leib (1879, Dvinsk (now-Daugavpils)) – public figure.

Leib Mizrokh was born into the family of merchants. From the age of 16, he worked in his father's business. Member of the board of Dvinsk's Bikur Holim, Talmud Torah, and Commercial Bank. During the war, he moved to Kursk, where he worked for war refugees. He was an activist in the Kursk community. After the war, he settled in Libava (now - Liepāja), occupying a respected place in public life. He worked intensively in the Keren Hayesod and Keren Kayemet committees, and was involved in the establishment of a Jewish sanatorium on the board of Linat Tzedek. He was an activist in the Liepāja Jewish community and was its chairman for a time.