Rabbi Yitzchok Scheiner (November 5, 1922 – January 31, 2021) was an Israeli–American rabbi who was the rosh yeshiva of the Kamenitz yeshiva of Jerusalem.^[2][3][4]

He was born in May 1922 in Pittsburgh to immigrants from Poland. He graduated Peabody High School in 1938. During the 1940s, he studied at Yeshiva College (Yeshivas Rabbenu Yitzchok Elchonon)^[5] and at Yeshiva Torah Vodaas under Rabbi Shlomo Heiman.^[1]

During the 1960s, he taught at a Yeshiva in Montreux, Switzerland.

After the death of his father-in-law (who was the rosh yeshiva of the Kamenitz yeshiva in Jerusalem), Rabbi Scheiner headed the yeshiva alongside his brother-in-law. After the death of his brother-in-law in 1998, Rabbi Scheiner served as the central rosh yeshiva with his brother-in-law's son at his side. Rabbi Scheiner's two sons and his son-in-law also teach at the yeshiva.

In the 1990s, he became a member of the Moetzes Gedolei HaTorah of Degel HaTorah.

Toward the end of the 1940s, he married a granddaughter of Rabbi Boruch Ber Leibowitz. His wife died in 2007. He lived in the Kerem Avraham neighborhood in Jerusalem.

Scheiner died from COVID-19 during the COVID-19 pandemic in Israel on 31 January 2021 at the age of 98.^[6][7] His death occurred just hours after that of Rabbi Meshulam Dovid Soloveitchik. An estimated 8,000 mourners attended Scheiner's Jerusalem burial.^[8]