Grommet for wire

A grommet for a wire may include a main body extending in a first direction parallel to a longitudinal direction of a wire, a passing hole passing through the main body in the first direction and accommodating the wire therein, and an insertion slit formed to be open at a side surface of the main body to connect the outside of the main body and the passing hole so that the wire can be inserted into the passing hole in a second direction orthogonal to the first direction from a side portion of the main body.