The following countries either ban pit bulls completely or place strict conditions on their ownership, rescue and importation. For more information about the laws for each county, see:
https://petolog.com/articles/banned-dogs?CODE=banned-dogs

Argentina
Parts of Australia
Parts of Austria
Bavaria
Belarus
Parts of Belgium
Bermuda
Parts of Brazil
Parts of China
Parts of Canada
Denmark
Ecuador
Finland
France
Germany – Pit bull type dogs are banned in 15/16 German provinces.
Guyana
Ireland
Israel
Italy
Parts of Japan
Latvia
Liechtenstein
Malaysia
Malta
New Zealand – Not only are pit bulls banned, but pit bulls and other breeds deemed “menacing” by the Government are not considered for adoption and are euthanised as a matter of course.
Norway
Poland
Portugal
Puerto Rico
Romania
Russia
Singapore
Spain
Switzerland
Turkey
The UEA
Ukraine
United Kingdom
Venezuela

No countries except Canada and the US allow the importation of pit bull type dogs.
http://www.pettravel.com/news_agressivedogbreeds.cfm