Canada's Smartest Person is a Canadian reality television competition series. Contestants compete in a series of different challenges based on American psychologist Howard Gardner's theory of multiple intelligences to earn the title of "Canada's Smartest Person." The first three seasons of the series were hosted by television personality Jessi Cruickshank, and the fourth by actor Paul Sun-Hyung Lee. Actor Jeff Douglas co-hosted the first season in 2014 with Cruickshank.

The show is produced by Media Headquarters and broadcast nationally on CBC Television. The first version of the show aired in 2012 as a 2-hour special. The series was picked up and the first full season aired on CBC as a 9-part series in 2014. It was the number one new Canadian series of the fall season, with almost one in four Canadians tuning in. In 2016, it was the only original Canadian format to be nominated for the Academy of Canadian Cinema & Television's Golden Screen Award for highest rated reality series. The second season began airing on October 4, 2015. On March 31, 2016, CBC announced the series would return for a third season as part of their fall/winter schedule. The fourth season, a spin off known as Canada's Smartest Person Junior, began airing on November 14, 2018. Canada's Smartest Person has one of the highest percentages of family and co-viewing ever on CBC.

During the broadcast, viewers participate in all of the challenges from home in real-time using a smartphone app. The play-along app has been an industry-leading success. The first season of the series saw over 175,000 downloads of the app and nearly one million individual intelligence tests taken across the country. As of 2017 there have been over 300,000 downloads of the app, making it one of the most successful peer to peer gaming applications in Canada.

Every week four Canadians compete in front of a studio audience. They are given a set of five challenges designed to test their abilities in one or more of the following intelligence categories: musical, physical, social, logical, visual and linguistic. There was always one challenge that combined two categories together.

In the series finale, eight finalists compete to earn the title of Canada's Smartest Person.

The 2014 series opened with a one-hour documentary that explored the Theory of Multiple Intelligence.

The format is being exploited internationally by multi-media studio Electus. Electus has licensed Canada's Smartest Person to Turkey's TRT and Sera Film for production, and has secured deals in France, Norway, Sweden and Portugal

In the season finale, the winners from each episode competed in a series of competitions for the title of "Canada's Smartest Person".