International Mother Language Day 2025 Theme. International mother language day is celebrated every year on the 21st of february and the purpose of this day is to raise awareness of language, cultural diversity and multilingualism around the world. February 21 is international mother language day, an annual observance created by unesco in 1999 to bring attention to the critical role of language diversity.
International mother language day highlights the importance of maintaining and cherishing one’s mother language, the language typically learned from birth and historically significant to one’s cultural identity. The first observance was organized by unesco as a celebration of linguistic and cultural diversity.