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 Epsom Derby but then defeated a strong field to win the Eclipse as a 28/1 outsider.