Zevi Joshua HaLevi Horowitz (1760–1816) also known as the Ribash (ריב"ש, Rabbi Joshua ben Shmuel) was the son of Shmuel Shmelke Horowitz of Nikolsburg and a prominent Moravian Hasidic figure.
In his early years he and his brother, Jakob Horowitz studied under their father.
After his studies, Zevi Joshua married the daughter of his uncle Pinchas Horowitz.
In 1811, he moved to Prossnitz, where he served as Chief rabbi up until his death in 1816.
He also wrote "Semikhat Moshe" which was published as an appendix to his father's work "Nezir ha-Shem".