Clayton Kearney (born 11 April 1964) is a former Australian sprinter and professional fitness coach.
In 1986 he won the 200m National Track Championship and in that same year competed on the Grand Prix International circuit throughout Europe, Great Britain, Canada and the United States, winning most of his races, including five national titles, while racing against the likes of Ben Johnson, Carl Lewis and Linford Christie.
In retirement Kearney was appointed the fitness and speed coach for the Manly Sea Eagles.
The team was generally regarded as being slow but since his involvement there has been a marked improvement in speed to the extent that they were then considered one of the quickest teams in the NRL competition, he has since been appointed to a similar role at the Canterbury-Bankstown Bulldogs and has achieved similar results.
Likewise, in 2000 and 2001 Kearney coached fitness and speed at Sydney Olympic Soccer club.