World Kindness Day is celebrated annually on 13th November. On this day, participants attempt to make the world a better place by celebrating and promoting good deeds and pledging acts of kindness, either as individuals or as organisations.

World Kindness Day was first launched in 1998 by The World Kindness Movement, an organisation formed at a 1997 Tokyo conference of like-minded kindness organisations from around the world. There are currently over 28 nations involved in The World Kindness Movement which is not affiliated with any religion or political movement. The mission of the World Kindness Movement and World Kindness Day is to create a kinder world by inspiring individuals and nations towards greater kindness.

In the UK, Kindness Day UK is organised by Kindness UK, a not for profit organisation. Kindness Day UK was launched on 13th November 2010, and the event has continued to grow in popularity every year with increasing numbers of individuals, schools, charities, institutions and businesses taking part.