Simcha Zissel Ziv Broida (Hebrew: שמחה זיסל זיו; 1824–1898), also known as Simhah Zissel Ziv or the Alter of Kelm (the Elder of Kelm), was one of the foremost students of Yisrael Salanter and one of the early leaders of the Musar movement. He is best known as the founder and director of the Kelm Talmud Torah.