International Jazz Day is an International Day declared by the United Nations Educational, Scientific and Cultural Organisation in 2011 “to highlight jazz and its diplomatic role of uniting people in all corners of the globe.”

• It is celebrated annually on April 30.
• The brainchild of jazz pianist and UNESCO Goodwill Ambassador Herbie Hancock, Jazz Day is chaired by Hancock along with the sitting UNESCO Director-General.
• The celebration is recognised on the calendars of both UNESCO and the United Nations.
• The Thelonious Monk Institute of Jazz, an American NGO also chaired by Hancock, is the lead organizational partner for Jazz Day. The Institute coordinates activities in the UNESCO member states as well as the Global Host Celebration.