- All December
Decembeard (bowel cancer)
A hair–raising fundraiser held during the month of December, Decembeard Australia encourages men to grow a beard, raise funds and help beat bowel cancer.
- 1 December
World AIDS Day
World AIDS Day, designated on 1 December every year since 1988, is an international day dedicated to raising awareness of the AIDS pandemic caused by the spread of HIV infection and mourning those who have died of the disease.
- 3 December
International Day of Persons with Disabilities
Focuses on issues that affect people with disabilities worldwide. The International Day of Persons with Disabilities re-affirms and draws attention to the rights of people who live with disabilities
- 5 December
International Volunteer Day
Celebrating volunteers worldwide and the difference that they make.