'DB' (i) was the designation of Allied convoys (together with a numerical suffix) plying the route from southern England to north-western France (September 1939/October 1939).

The first of the series was DB.1 of 12/13 September 1939 from Southampton to Brest with unspecified vessels, and the last was DB.10 of 1/2 October 1939 from Southampton to Brest with unspecified vessels escorted by the British destroyers Arrow and Intrepid.