The Nordic Cross flag is any of certain flags bearing the design of the Nordic or Scandinavian cross, a cross symbol in a rectangular field, with the center of the cross shifted towards the hoist.

All of the Nordic countries except Greenland have adopted such flags in the modern period, and while the Scandinavian cross is named for its use in the national flags of the Scandinavian nations, the term is used universally by vexillologists, in reference not only to the flags of the Nordic countries.