This article examines the impact of lawyer capability on the decisionmaking of the Supreme Court of Canada (SCC). Extending prior attorney capability studies of U.S. judicial decisionmaking, we test three lawyer variables: prior litigation experience, litigation team size, and Queen's Counsel designation. We find that the first two variables have a statistically significant and positive relationship with the SCC's decisions in non‐reference‐question cases from 1988 to 2000. Moreover, this relationship persists even after controlling for party capability, issue area, and judicial policy preferences.