3December is an annual event celebrating 3D computer graphics. It was launched by Alias System Corporation. Currently, the event is coordinated by Autodesk, as Autodesk acquired Alias in December 2006.
Global No Pesticides Use Day is observed on December 3. It was launched by Pesticide Action Network (PAN) International in 1998 to commemorate the Bhopal disaster of 1984, which is considered the world's worst industrial disaster.
International Basque Language Day, also known as International Day of the Basque Language, is celebrated on December 3. It was established in 1948 and became official in 1995.
International Day of Persons with Disabilities is an annual United Nations observance held on December 3. It was established by the General Assembly in 1992 as International Day of Disabled Persons and has been celebrated every year ever since.