2009 World Thoroughbred Rankings

The 2009 World Thoroughbred Rankings was the 2009 edition of the World Thoroughbred Rankings. It was an assessment of Thoroughbred racehorses issued by the International Federation of Horseracing Authorities (IFHA) in January 2010. It included horses aged three or older which competed in flat races during 2009. It was open to all horses irrespective of where they raced or were trained.

This year's highest rating was awarded to Sea the Stars for his performance in the Irish Champion Stakes. He was given a rating of 136. A total of 333 horses were included in the list, 45 more than the previous year.