
1.
Gulf War Oil SpillPersian Gulf (Kuwait), 1991
10.3 million barrels

2.
Ixtoc I Oil WellGulf of Mexico (Mexico waters), 1980
3.3 million barrels

3.
Atlantic EmpressTrinidad & Tobago, 1979
2.1 million barrels

4.
Fergana ValleyUzbekistan, 1992
2 million barrels

5.
Nowruz oil field1983, Persian Gulf (Iran)
1.9 million barrels

6.
ABT Summer tanker1983, 700 miles off Angola
1.9 million barrels

7.
Castillo de Bellver tanker1983, Saldanha Bay, South Africa
1.8 million barrels

8.
Amoco Cadiz tanker1978, Brittany, France
1.6 million barrels

9.
Amoco Haven tanker1991, Mediterranean, near Genoa, Italy
1.1 million barrels

10.
Odyssey tanker1988, 700 miles off Nova Scotia, Canada.
1 million barrels