Abstract: A pressure side impact sensor for a vehicle according to an exemplary embodiment of the present invention includes: a housing which has a connector; a middle cover which is connected with the housing, and has a flow path for transmitting air; an air pressure sensor which is positioned between the housing and the middle cover, and detects air pressure in a vehicle; and a cover which is connected with the middle cover, in which the middle cover has a locking hole, and the cover further includes a guide locking portion which is movable inward and outward from the cover, and coupled to the locking hole.