Tonga
0 bbl (1 January 2009 est.)
Trinidad and Tobago
728.3 million bbl (1 January 2009 est.)
Tunisia
425 million bbl (1 January 2009 est.)
Turkey
300 million bbl (1 January 2009 est.)
Turkmenistan
600 million bbl (1 January 2009 est.)
Turks and Caicos Islands
0 bbl (1 January 2009 est.)
Uganda
0 bbl (1 January 2009 est.)
Ukraine
395 million bbl (1 January 2009 est.)
United Arab Emirates
97.8 billion bbl (1 January 2009 est.)
United Kingdom
3.41 billion bbl (1 January 2009 est.)