Lloyd Cowan (born 8 July 1962) is a former British track and field athlete, who specialised in the 110 and 400 metres hurdles. He was selected for the 1984 Los Angeles Olympics, but he could not go because of illness; competed at the 1994 Commonwealth Games and won his last medal at the AAA nationals in 1999. He retired from athletics at the age of 39 and now coaches 18 athletes, including Christine Ohuruogu, the former 400 metres Olympic, World and Commonwealth Champion; Simeon Williamson, the former British 100 metres champion; and Andy Turner, the former European and Commonwealth 110 metres hurdles champion.