Abstract: Disclosed is a device for positioning an injector in its circumferential direction so that a plurality of nozzle holes formed at one end of the injector connected at the other end to a delivery pipe in an internal combustion engine can be accurately directed toward corresponding intake ports respectively. The device comprises a clip non-rotatably mounted on part of the delivery pipe, and the clip includes retaining portions extending along diametrically opposite wall portions of the injector and having confronting projections adapted to engage mating holes bored in the diametrically opposite wall portions respectively of the injector thereby positioning the injector.