Wales lost to England in Group B but went on to beat Northern Ireland and Belgium, the second best team in the world, before a 2-0 loss to Portugal.
Welsh forward Gareth Bale took to Twitter to congratulate his teammates on reaching this mark:
11th! We've come along way #TBT 🔥🐲 pic.twitter.com/QZ6naBOKuK
— Gareth Bale (@GarethBale11) July 14, 2016
Champions Portugal jumped two rungs to sixth with beaten finalists and hosts France climbing 10 spots to seventh.
Euro 2016: Wales stun Belgium 3-1 to reach semi-finals
England's dismal showing in France where they lost to minnows Iceland saw them slip two spots to 13th The Icelanders are now in 22nd spot, above European football heavyweights the Netherlands who failed to make the 2016 championship.
Despite losing the Copa America Centanario final to Chile Argentina retain the rankings' summit ahead of the Belgians, Colombia, Germany and Chile.
Euro 2016: Wales beat Northern Ireland 1-0 in Euro 2016 last 16
Rankings
1. Argentina
2. Belgium
3. Colombia
4. Germany
5. Chile
6. Portugal (+2)
7. France (+10)
8. Spain (-2)
9. Brazil (-2)
10. Italy (+2)
11. Wales (+15)
12. Uruguay (-3)
13. England (-2)
14. Mexico (+2)
15. Croatia (+12)
16. Poland (+11)
17. Ecuador (-4)
18. Switzerland (-3)
19. Turkey (-1)
19. Hungary (+1)
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