Lester B. Pearson Collegiate Institute is a public high school in the Malvern neighbourhood of Toronto, Ontario, Canada.

The school is named after Canadian Prime Minister Lester B. Pearson, who was Canada's only winner of the Nobel Peace Prize.

The school's motto is "Peace through Understanding," which is from Pearson's 1957 Nobel speech, and attempts to inspire appreciation of diversity.

This motto is featured on the school's logo in which stylized human figures in the outside circle have outstretched arms, symbolizing understanding among the nations of the world.

Lester B. Pearson's newest program is the Health and Wellness Specialist High Skills Major (SHSM).