The 1951 Macdonald Brier, the Canadian men's national curling championship, was held from March 6 to 10, 1951 at Dalhousie Memorial Arena in Halifax, Nova Scotia.

Team Nova Scotia, who was skipped by Don Oyler won the Brier Tankard as they finished round robin play unbeaten with a 10–0 record.

This was the second time in which Nova Scotia had won the Brier, with their previous title being the inaugural event in 1927.

Oyler would quit competitive curling after his Brier championship due to a sore wrist, which effected his delivery.

[2] British Columbia, Manitoba, and Saskatchewan all tied for second with 7-3 records, necessitating a tiebreaker playoff between the three teams for runner-up.