English is used as an official language in many countries. However, United Kingdom, United States and Australia do not have official language although English is dominant language in these countries.

Countries in Caribbean like Antigua and Barbuda, Bahamas, Barbados, Dominica, Countries in Africa like Botswana, Cameroon, Eritrea, Ghana, South Africa, Kenya, Countries in Asia like India, Singapore, Pakistan all use English as their official language. Check here for the full list of countries where English is an official language.