The 2003 M&M Meat Shops Masters of Curling was held from January 9 to 12, 2003 in Sudbury, Ontario.

The event was one of the four men's Grand Slams of the 2002–03 curling season.

Edmonton, Alberta's Kevin Martin rink defeated Vic Peters of Winnipeg, Manitoba in the final, 8–7.

[1] It was Martin's seventh straight event win on the World Curling Tour, and his second slam title of the season.

[3] The Canada Cup, which was televised on CBC won the ratings battle with 350,000 viewers for the women's final on the Saturday and 435,000 for the men's final on Sunday, while 145,000 viewed the Masters semi (same time slot as the Canada Cup men's final) and 288,000 viewed the Masters final on Sunday night.