"World Plastic Free Day" most commonly refers to International Plastic Bag Free Day, observed annually on July 3rd.

It's a global initiative aimed at raising awareness about the devastating environmental impact of single-use plastic bags and encouraging individuals, communities, and businesses to reduce their reliance on them. The day promotes the adoption of sustainable alternatives like reusable bags, highlighting the urgent need to combat plastic pollution that harms wildlife, pollutes ecosystems, and persists in the environment for hundreds of years.