Baruch Leib Rosowsky (Latvian: Baruhs Leibs Rozovskis, 1841 – 1919) was a famous cantor of the Great Choral Synagogue in Riga and a composer of religious music in Riga, at the time a city in Imperial Russia. Rosowsky's time of death was during the Latvian War of Independence. His son was also a famous cantor, named Solomon Rosowsky. It is likely that Rosowsky's family is related to the Rasofsky branch of the Barney Ross family.