Yes, you are allowed to do this if the organisation also uses this abbreviation.
If you cite the same source more than once, the abbreviation may be used from the second citation onwards. In the first citation state the name in full and the abbreviation in brackets or add the abbreviation in square brackets to show the reader what it stands for.
World Health Organization. (2024, December 2). Ensuring the political participation of persons with disabilities in health decision-making. Retrieved December 10, 2024, van https://www.who.int/europe/news-room/feature-stories/item/ensuring-the-political-participation-of-persons-with-disabilities-in-health-decision-making
First parenthetical citation: (World Health Organization [WHO], 2024).
First narrative citation: World Health Organization (WHO, 2024).
Second and subsequent parenthetical citations: (WHO, 2024).
Secondnd and subsequent narrative citations: WHO (2024).