National Meatball Day is observed worldwide every March 9, celebrating the beloved dish of meatballs. People commemorate this day by enjoying various meatball dishes, such as spaghetti with meatballs, meatball soup, and meatball pizza. The tradition of meatballs has its roots in European cuisines, particularly from countries like Italy, Spain, and Sweden, with many recipes brought to the Americas by immigrants. In the United States, popular meatball dishes include the Italian-American classic spaghetti with meatballs and the meatball sandwich, both inspired by Italian cuisine. Additionally, porcupine meatballs, a staple during the Great Depression, and Quebecois meatball stew are notable variations. The day encourages enthusiasts to indulge in their favorite meatball recipes and explore the diverse culinary interpretations of this international dish.