"On the occasion of this Day, I launch an appeal for the potential of multilingual education to be acknowledged everywhere, in education and administrative systems, in cultural expressions and the media, cyberspace and trade." — UNESCO Director-General Irina Bokova

2017 Theme: Towards Sustainable Futures through Multilingual Education

To foster sustainable development, learners must have access to education in their mother tongue and in other languages. It is through the mastery of the first language or mother tongue that the basic skills of reading, writing and numeracy are acquired. Local languages, especially minority and indigenous, transmit cultures, values and traditional knowledge, thus playing an important role in promoting sustainable futures.

International Mother Language Day was proclaimed by the General Conference of the United Nations Educational, Scientific and Cultural Organization (UNESCO) in November 1999 (30C/62).

On 16 May 2007 the United Nations General Assembly in its resolution A/RES/61/266 called upon Member States "to promote the preservation and protection of all languages used by peoples of the world". By the same resolution, the General Assembly proclaimed 2008 as the International Year of Languages, to promote unity in diversity and international understanding, through multilingualism and multiculturalism.

International Mother Language Day has been observed every year since February 2000 to promote linguistic and cultural diversity and multilingualism.

Languages are the most powerful instruments of preserving and developing our tangible and intangible heritage. All moves to promote the dissemination of mother tongues will serve not only to encourage linguistic diversity and multilingual education but also to develop fuller awareness of linguistic and cultural traditions throughout the world and to inspire solidarity based on understanding, tolerance and dialogue.