Arctic Cosmos (foaled 31 January 2007) is an American-bred, British-trained racehorse and sire best known as the winner of the 2010 St. Leger Stakes.
[3] Arctic Cosmos is a bay horse with a small white star bred in Kentucky by Sheridan & Iadora Farm.
As a yearling, Arctic Cosmos was bought for 47,000 guineas at Tattersalls Blandford Bloodstock and John Gosden for his wife Rachel Hood.
The field also included Rewilding, Snow Fairy, Dandino, Joshua Tree and the Irish Derby runner-up Midas Touch.
Ridden by William Buick, Arctic Cosmos tracked the leaders before taking the lead approaching the final furlong and stayed on well to win by one and three quarter lengths from Midas Touch, with the 40/1 outsider Corsica in third place.