Four faba bean cultivars of European origin were tested in eastern and western provinces of Canada and their yield performance compared with a Canadian wheat cultivar. Yield stability was measured by the relative amount of environmental variability between and within test environments. Seed yields of faba beans were highest (4,388 kg/ha) in Manitoba and slightly above the wheat check; in Saskatchewan, faba bean yields (2,836 kg/ha) were 618 kg/ha below the wheat. Environmental variances in the two provinces were equal to or better than the wheat check. In the eastern provinces, faba bean yields (3,263 kg/ha) were considerably higher than those of the wheat, but so were their environmental variances. It is concluded that the wheat cultivar was better adapted to dry conditions, while faba beans responded more favorably to a moister environment.