New Year's Day in Australia, much like the rest of the world, is celebrated on January 1st marking the first day of the calendar year. It is a public holiday in all territories and states of Australia. Recognizing this day as a holiday began when the country adopted the Gregorian calendar in 1752. This day celebrates the end of one year and the beginning of another, and Australians across the country join the rest of the world in welcoming the New Year.

Celebrations on New Year's Day in Australia are massive and diverse, they often kick off on New Year's Eve and stretch into the early hours of New Year's Day. Fireworks displays are a big part of the celebrations with the most famous one held in Sydney at the Harbour Bridge which attracts a global audience. Additionally, festivities may include parades, concerts, and parties occurring in cities and towns throughout the country. Favorite ways to celebrate include barbecues, brunches, and relaxing with family and friends.

The holiday period also consists of sports events taking place all over Australia, the most famous being the Sydney to Hobart Yacht Race which starts on Boxing Day (December 26) and concludes in early January. Cricket matches are also popular during this period. Additionally, New Year's Day is a traditional time for Australians to reflect on the year past, make New Year's Resolutions, and look towards the year ahead with optimism. It provides an opportunity for a fresh start, new opportunities, and a chance to come together as a community.