A glass guide for guiding vertical movement of a window glass in a door panel of a vehicle. The glass guide is easily assembled with the door and prevents water from falling on a door lock device. The glass guide is mounted in the door panel at a location separated from a lower end of a glass run that is attached to a door frame of the door panel. Further, the glass guide includes a guide portion for guiding the window glass. A cover is arranged on an upper end of the guide portion. The cover includes an inclined surface, which is inclined with respect to and which intersects a lateral, vertical plane that is located at a lower end of the glass run.