An eruv is a religious-legal enclosure which permits carrying in certain areas on Shabbat.

Eruv may also refer to:

Eruvin (Talmud), a tractate in Moed Eruv tavshilin ("mixing of cooked dishes"), which permits cooking on a Friday Holiday to prepare for Shabbat Eruv techumin ("mixing of borders"), which permits travel beyond the city boundary ("techum") on Shabbat

See also EREV, a class of motor cars