Reigning European Champions France are ranked second, behind Brazil, with Spain one place behind in third.
Holland are ranked joint-fifth with Argentina and Turkey, who failed to qualify for Portugal.
Despite their poor form in their run-up Germany go into the tournament ranked in eighth place, while England are in 13th spot.
The USA continue to hold a top-10 spot in ninth place, while Cameroon are the top-ranked African nation in 12th.