UN French Language Day is observed worldwide every March 20. This date commemorates the founding anniversary of the Organisation internationale de la Francophonie, which represents countries and regions where French is the first or customary language. The day celebrates the French language, which is the second most widespread language globally and has around 77 million native speakers. French and English were the first working languages of the United Nations, and French has a long history as an international language of diplomacy, commerce, and literature. UN French Language Day coincides with International Francophonie Day, highlighting the cultural significance and influence of the French language across various nations.