The United Nations (UN’s) International Day of Sign Languages (IDSL) is observed every year across the world on 23 September to promote and safeguard the linguistic identity and cultural diversity of deaf people and all sign language users worldwide.

IDSL 2025 is celebrated as part of the International Week of Deaf People (IWDP) 2025 from September 22 to 28, 2025.

Theme :

2025 Theme : No Human Rights Without Sign Language Rights.

Focus : This year’s theme emphasizes the need for full participation and dignity for the deaf community.

Background:

Origin: The idea for the IDSL was proposed by the World Federation of the Deaf (WFD) , which represents 135 national associations of deaf people.

Adoption: On 19 December 2017 , the UN General Assembly (UNGA) adopted Resol

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