Both teams are in action on Thursday, with Scotland taking on Austria and Wales facing Bosnia-Herzegovina in two of three European semi-finals.
What do they need to do to join England in qualifying for next year’s tournament in New Zealand and Australia? It’s not straightforward… here’s all you need to know.
Nine teams finished runners-up in the group stages of European qualifying for the World Cup and – based on performances in qualifying – the three top-seeded teams were given a bye to the finals.
Those top seeds were Iceland, Republic of Ireland and Switzerland, while the remaining six teams, including Scotland and Wales, went into the one-legged semi-finals.
If Scotland win their semi-final tie they would host the Republic of Ireland in the final, while a victory for Wales would see them travel to Switzerland.
However, winning the play-off final does not guarantee a spot at the World Cup as only two of the three play-off winners will automatically qualify.
The remaining team will have to play a third game in an inter-confederation play-off, which will take place in New Zealand in February 2023.
So how do they separate the three play-off winners?
They will be ranked according to qualifying performances and play-off results
– the latter will see them receive three points for a win or one point if the win is achieved via a penalty shootout.
Current rankings
| Ranking of group runners-up from | Women’s World Cup qualifying | ||
|---|---|---|---|
| Team | Points | Goal difference | Goals scored |
| Switzerland | 19 | 19 | 23 |
| Iceland | 18 | 22 | 25 |
| Republic of Ireland | 17 | 22 | 26 |
| Austria | 16 | 28 | 34 |
| Belgium | 16 | 23 | 30 |
| Scotland | 16 | 9 | 22 |
| Portugal | 16 | 9 | 18 |
| Wales | 14 | 8 | 13 |
| Bosnia-Herzegovina | 11 | -8 | 9 |
The Republic of Ireland and Scotland are in stronger positions than Wales in the rankings and would almost certainly qualify if they win their final.
Wales are likely to be the side entering the inter-confederation play-offs, should they beat Bosnia-Herzegovina and Switzerland.
One scenario which would see them go through automatically would be if they won the final by two goals and Portugal or Scotland also won their play-off final – but only via a penalty shootout.
Bosnia and Herzegovina are the one side unable to finish as a top-two play-off winner – at best they can reach the inter-confederation play-offs.
The 10-team inter-confederation play-offs will also feature Chinese Taipei, Thailand, Cameroon, Senegal, Haiti, Panama, Chile, Paraguay, and Papua New Guinea.
Play-off fixtures
Play-off semi-finals (6 October, all times BST)
Portugal v Belgium (19:00)
Wales v Bosnia-Herzegovina (19:15)
Scotland v Austria (19:35)
Play-off finals (11 October)
Portugal or Belgium v Iceland (TBC)
Scotland or Austria v Republic of Ireland (TBC)
Switzerland v Wales or Bosnia-Herzegovina (19:00)