A door open/close system for a vehicle includes: a plurality of door open/close devices 11, 11′ having a latch mechanism 14 including a latch 13 for engaging with an engaging member 12, a motor 16a (16a′) for driving the latch mechanism 14, and a latch state detecting member 21 (21′); and a control member 4 for starting to drive the motor of any one of all the door open/close device when the latch state detecting member of the one door open/close devices detects that the latch mechanism is in the half-latch state, said control member driving synchronously the motors of all the door open/close devices except the one door open/close device to change the latch mechanisms from the half-latch state to the full-latch state when the latch state detecting members of all the door open/close devices except the one door open/close device detect that the latch mechanisms are in the half-latch state in a case that the door of the vehicle is changed from a fully opened state to a fully closed state.