Chelev (Hebrew: חֵלֶב, ḥēleḇ), "suet", is the animal fats that the Torah prohibits Jews and Israelites from eating.

The prohibition on chelev is only regarding those animal types which were used as a korban: cattle, sheep and goat, which are the only kosher domestic livestock.

Rabbi Abraham Isaac Kook suggested that the prohibition of chelev reminds us that we may only take the lives of domesticated animals for our essential needs.

Some tendons and muscles are also removed due to the rabbinic law, since they are neighboring and resolving[clarification needed] some chelev.

[6] Rabbi Judah HaLevi, in his 12th century work The Kuzari, questioned the practicality of the Karaite position: "Where exactly does [the prohibited fat] end?