Sudan
1.6 billion bbl (2006 est.)
Suriname
150 million bbl (2005)
Syria
2.5 billion bbl (2006 est.)
Taiwan
3 million bbl (2006 est.)
Tanzania
0 bbl (1 January 2002)
Thailand
583 million bbl (November 2003)
Trinidad and Tobago
990 million bbl (1 January 2004)
Tunisia
1.7 billion bbl (2006 est.)
Turkey
288.4 million bbl (1 January 2002)
Turkmenistan
273 million bbl (1 January 2002)