Mordechai Breuer (; May 14, 1921 - February 24, 2007) was a German-born Israeli Orthodox rabbi. He was one of the world's leading experts on Tanakh (Hebrew Bible), and especially of the text of the Aleppo Codex.

His first cousin was the historian also named Mordechai Breuer. Breuer was a great-grandson of Rabbi Samson Raphael Hirsch.