Rosh (Hebrew: ראש, "head" or "leader") may refer to:
- Rosh, a minor Biblical figure, mentioned in the Book of Genesis and a nation listed in Ezekiel
- "The ROSH", Rabbi Asher ben Jehiel (1250-1328) a prominent Talmudic scholar
- Rosh Hashanah, the day of the Jewish New year
- Rosh Hashanah (Talmud), a text of Jewish law in the Mishna and Talmud
- Rosh Chodesh, the first day of each Hebrew month
- Rosh yeshiva, the head of a Talmudic academy (yeshiva)
- Lea Rosh, German television journalist and publicist
- Roshambo, An alternate name of Rock-Paper-Scissors
- An environmental European law Restriction of Hazardous Substances Directive