1968 Liberal Party of Canada leadership election

The Liberal Party of Canada held a leadership election on April 6, 1968. The election was won by Minister of Justice and Attorney General Pierre Elliott Trudeau, who became the new prime minister of Canada as a result. He was the unexpected winner in what was one of the most important leadership conventions in party history. The Globe and Mail's newspaper report the next day called it "the most chaotic, confusing, and emotionally draining convention in Canadian political history."

The convention was held following the announced retirement of Lester B. Pearson, who was a well-respected party leader and prime minister, but who had failed to win a majority government in two attempts. Eight high-profile cabinet ministers entered the race, but by the time the convention began on April 3, the charismatic Trudeau had emerged as the front runner. He was strongly opposed by the party's right wing, but this faction was divided between former Minister of Trade and Commerce Robert Winters and Minister of Transport Paul Hellyer and failed to mount a united opposition. Trudeau won the leadership with the support of 51% delegates on the fourth ballot of the convention.