Live in Las Vegas: A New Day... is the eighth home video by Canadian singer Celine Dion, released on DVD between 7–10 December 2007 in Europe, on 11 December 2007 in North America, on 15 December 2007 in Australia and on 19 December 2007 in Japan. It includes the record-breaking A New Day... show at Caesars Palace in Las Vegas, Nevada. The blu-ray edition was also released on 5 February 2008 in North America, and between 8–22 February 2008 in Europe. Live in Las Vegas: A New Day... topped the charts in the United States, United Kingdom, Canada, France, Belgium, Switzerland, Denmark, Netherlands, Estonia and New Zealand, and reached top ten elsewhere. It was commercially successful achieving 3× Diamond status in Canada, Diamond in France and Multi-Platinum, Platinum and Gold in other countries. It also became the 19th best selling DVD of 2008 in Brazil.

A New Day... was the first concert residency performed by Canadian singer Celine Dion in The Colosseum at Caesars Palace in Las Vegas, Nevada, United States. It was created and directed by Franco Dragone to support her seventh English-language and eighteenth studio album A New Day Has Come (2002). The show premiered on 25 March 2003 and ended on 15 December 2007.