Environment Friend (foaled 19 March 1988) was a British Thoroughbred racehorse and sire best known for his win in the 1991 running of the Eclipse Stakes, one of the United Kingdom's most important weight-for-age races. After winning the second of his races as a two-year-old he established himself as a top-class colt with a five length win in the Dante Stakes in May 1991. He ran poorly in The Derby but then defeated a strong field to win the Eclipse as a 28/1 outsider. Environment Friend never won again, but remained in training until the age of seven, and was placed in several important races including the Coronation Cup (twice), the Champion Stakes and the Irish Champion Stakes. From 1993 until 1995 his time was divided between standing as a breeding stallion and competing as a racehorse.