This research examines the economic implications of micro- and nano plastic pollution. The study assesses the substantial costs associated with environmental cleanup, healthcare, and biodiversity loss. Economic impacts on sectors such as fisheries, tourism, and agriculture are analyzed. The paper highlights the urgent need for effective policies, technological advancements, and international cooperation to mitigate these costs. By quantifying the economic consequences, this research emphasizes the imperative for immediate action to address plastic pollution and its detrimental effects on economies and societies worldwide.