Which country's flag features the Southern Cross constellation with four red stars? New Zealand. Its national flag shows four five-pointed red stars with white borders on a blue field, representing the Southern Cross, or Crux, in the Southern Hemisphere.
The design is a Blue Ensign with the Union Jack in the upper-left corner, reflecting New Zealand's historical ties to Britain. The Southern Cross connects the flag to New Zealand's location in the South Pacific and has also been associated with Māhutonga in Māori tradition.
New Zealand's flag was designed by Royal Navy officer Albert Hastings Markham and first adopted for official use in 1869. It received statutory recognition in 1902. A 2015–2016 referendum considered replacing it, but voters chose to retain the existing design.
The most common mix-up is Australia’s flag. Both display the Southern Cross, but Australia has five white stars plus a large Commonwealth Star, while New Zealand has four red-centred stars and no large star below the Union Jack.