The 20-times champion rider’s first broadcast will be on November 14 at Cheltenham’s Open meeting.
He will also work on several of Channel 4’s premier racedays and festivals across both codes of the sport.
These will include the Hennessy Gold Cup, the William Hill King George, Cheltenham’s January Trials meeting, two days from Cheltenham Festival, the Crabbie’s Grand National as well as the major Flat events such as the Investec Derby and Royal Ascot.
McCoy said: “I’ve been very lucky and privileged to have enjoyed a fantastic career as a jump jockey.
“I’m looking forward to working with Channel 4 over the next year and delighted to be back at some of the main festivals with a top presentation team.”
He retired from the saddle in April after riding an unparalleled 4,357 winners that included the Grand National, two Cheltenham Gold Cups, three Champion Hurdles and almost every other big race in the National Hunt calendar as well as being voted BBC Sports Personality of the Year in 2010.
Ed Havard, Channel 4’s head of TV events, said: “AP is the most celebrated jockey in the world and is one of the greatest sportsmen of all time.
“His unrivalled knowledge of the sport will be an absolutely massive asset to our coverage and viewers will benefit from the insights of the most famous name in the sport.
“Together with our existing team – including Clare Balding, Mick Fitzgerald and Nick Luck – AP will help take Channel 4’s racing coverage to new levels.
“We are absolutely thrilled to welcome him to Channel 4.”