Richard Wagner is a Canadian jurist serving as the 18th and current Chief Justice of Canada since 2017. He previously served as a puisne justice of the Quebec Court of Appeal (2011–2012) and of the Supreme Court of Canada (2012–2017). For several months in 2021, following Julie Payette's resignation as Canada's governor general, Wagner was the administrator of the government of Canada as well as chief justice.

The chief justice of Canada is the presiding judge of the nine-member Supreme Court of Canada, the highest judicial body in Canada. As such, the chief justice is the highest-ranking judge of the Canadian court system. The Supreme Court Act makes the chief justice, a Crown in Council appointment, meaning the Crown acting on the advice of the prime minister and minister of justice. The chief justice serves until they resign, turn 75 years old, die, or are removed from office for cause. By tradition, a new chief justice is chosen from among the court's incumbent puisne justices.