The QGD – Marshall Defence arises after 1.d4 d5 2.c4 Nf6. ECO code: D06.

Named after Frank Marshall (1877–1944). Black develops the knight before deciding on the pawn structure. After 3.cxd5 Nxd5, Black occupies the centre with the knight, or after 3.Nc3, the game transposes into standard QGD lines.