Tonga
Tongan, English

Trinidad and Tobago
English (official), Hindi, French, Spanish,
Chinese

Tunisia
Arabic (official and one of the languages of commerce),
French (commerce)

Turkey
Turkish (official), Kurdish, Arabic, Armenian, Greek

Turkmenistan
Turkmen 72%, Russian 12%, Uzbek 9%, other 7%

Turks and Caicos Islands
English (official)

Tuvalu
Tuvaluan, English, Samoan, Kiribati (on the island of Nui)

Uganda
English (official national language, taught in grade schools,
used in courts of law and by most newspapers and some radio
broadcasts), Ganda or Luganda (most widely used of the Niger-Congo
languages, preferred for native language publications in the capital
and may be taught in school), other Niger-Congo languages,
Nilo-Saharan languages, Swahili, Arabic

Ukraine
Ukrainian, Russian, Romanian, Polish, Hungarian

United Arab Emirates
Arabic (official), Persian, English, Hindi, Urdu