When Is World Smile Day 2024 Theme. Established by harvey ball, the creator of the iconic smiley.  — around the world, people celebrate world smile day in fun and creative ways that include attempts to break the record for the largest human smiley faces.

World smile day is celebrated on the first friday in october each year since 1999. World smile day is a heartwarming global celebration dedicated to spreading happiness and encouraging acts of kindness.