Newcastle and Sunderland have lodged bids with the FA to be a host city should England get the World Cup in 2018.
And people in Newcastle and Gateshead are being asked to show their support by wearing their football shirts at work this Thursday.
The people behind England's 2018 bid will be on Tyneside that day for a final inspection of Newcastle and Gateshead.
NGI chief executive Andrew Dixon: "We want everyone to show just how passionate they are."