Quick answer: Both flags use the Union Jack and the Southern Cross on a blue background, which is why they’re so often mixed up. The easiest way to tell them apart: New Zealand’s flag has 4 red stars with white borders, while Australia’s has 6 white stars (5 in the Southern Cross plus a larger seventh point — the Commonwealth Star — beneath the Union Jack). Australia’s background is also a slightly darker navy blue.
Confusing the two is common enough that it’s caused real diplomatic awkwardness over the years — even New Zealand’s own political figures have joked about the mix-up. Here’s a full breakdown of every difference, plus the history behind why the flags ended up looking so alike. (If you’re curious how close the two countries actually are, we’ve also broken down how far Australia is from New Zealand.)
At a glance: Australia vs New Zealand flag
Australian Flag
New Zealand Flag
| Feature | Australia | New Zealand |
|---|---|---|
| Total stars | 6 | 4 |
| Star colour | White | Red, with white borders |
| Southern Cross stars | 5 (four large seven-pointed, one small five-pointed) | 4 (all five-pointed) |
| Extra star | Commonwealth Star (7 points) beneath the Union Jack | None |
| Background shade | Darker navy blue | Slightly lighter royal blue |
| Adopted | 1901 (design); official national flag from 1954 | 1902 |
| Union Jack position | Top-left canton | Top-left canton |
Why do the flags look so similar?
Both nations were British colonies, and both chose to keep the Union Jack in the canton (top-left corner) as a nod to that shared heritage. Both also sit under the same night sky in the Southern Hemisphere, which is why the Southern Cross constellation appears on both flags — it’s a natural landmark for any country navigating and mapping itself south of the equator. Fiji, Australia, and New Zealand all feature the Southern Cross for this reason.
Australia’s flag was chosen through a public design competition after Federation in 1901, combining the Union Jack, the Commonwealth Star (representing the federated states and territories), and the Southern Cross. New Zealand’s flag, adopted a year earlier in 1902, uses a simpler four-star version of the same constellation, without the extra Commonwealth Star.
New Zealand actually held a national referendum on changing its flag in 2015–16, largely because of confusion with Australia’s flag among other reasons — but voters chose to keep the current design.
FAQ
Both were British colonies that kept the Union Jack in the canton, and both use the Southern Cross constellation since it’s visible from both countries’ night skies.
Yes — a two-stage referendum was held in 2015 and 2016, with a silver fern design as the leading alternative. New Zealanders voted to keep the current flag.
Australia’s flag has 6 stars in total; New Zealand’s has 4.
Look at the stars: white on Australia’s flag, red on New Zealand’s. If you can see a star underneath the Union Jack (not just in the cross pattern), it’s Australia’s flag.