Siri is available in more than 35 countries around the world, including the U.S., UK, Canada, Australia, New Zealand, and many countries in Asia and Europe. 

A full list of countries where Siri is available can be found on Apple's Feature Availability website. Certain Siri features like translations, sports info, restaurant information and reservations, movie information and showtimes, dictionary, calculations, and conversions are limited to a smaller number of countries.