You can specify the locale by setting the Accept-Language HTTP header in your request. Alternatively, you can add a locale=XXX parameter to your request but HTTP header specification is preferred. We currently support the following locales:

Language Locale Code
English en (default)
Spanish es
French fr
German de
Italian it
Japanese ja
Thai th
Turkish tr
Korean ko
Russian ru
Portugese pt
Indonesian id

Note: If nothing is specified, for geographical entities (e.g., city names), we'll fall back to using the language that's most popular in the country for that venue.

Foursquare also supports many country-specific subcategories in our venue categories. "Supported Countries" are listed in our category tree for categories that we think will only apply in certain countries.