Lists of countries and territories by official language

This is a list of lists of countries and territories by official language.


 * List of countries and territories where Afrikaans or Dutch are official languages
 * List of countries and territories where Arabic is an official language
 * List of countries and territories where Chinese is an official language
 * List of countries and territories where English is an official language
 * List of countries and territories where French is an official language
 * List of countries and territories where German is an official language
 * List of countries and territories where Hindustani is an official language
 * List of countries and territories where Italian is an official language
 * List of countries and territories where Malay is an official language
 * List of countries and territories where Persian is an official language
 * List of countries and territories where Portuguese is an official language
 * List of countries and territories where Romanian is an official language
 * List of countries and territories where Russian is an official language
 * List of countries and territories where Spanish is an official language
 * List of countries and territories where Tamil is an official language