Vegan Orange Juice

Best thing to do is make your own!
You can buy a citrus juicer from kmart for around $10, and oranges aren't that expensive. Then you can be 100% sure it's vegan, and you are getting a better dose of vitamins.

I can't say which are but I'm also going to say nothing beats self-made orange juice, or in my case, mum-made
I've also heard a lot of the so-called 'freshly squeezed' juices are actually quite old (I've heard as old as 3 years!) so again, I'm backing Kaedee that you really ought to make your own!

The orange juice at Aldi specifies that its suitable for vegans.

I suggest noting some of the brands, look up those sites and check the additives online or alternatively email the company to be sure.

There are a lot of orange juices at the store that appear to be vegan. Though one can never be entirely sure as companies are not required to list what they use during the processing phase in their ingredients list. So if they were to use gelatin to process the juice, they wouldn't have to list it as it is not in the final product...similar to bone char in sugar in the US.
Though I am not sure if many juice companies use this process - I have read of it happening before. I personally don't go that far into things...to me ingredients used in processing is a lot like emulsifiers which may or may not be vegan

According to this FB group - Berri juice is vegan =)
http://www.facebook.com/pages/Aussie-Vegan-Food-Updates/217412721604183

Also orange juice from the fridge section in the supermarket generally has less additives etc. than the shelf stuff.

I drink nuddies because it doesnt have persevatives, its also on the ethical consumers list whereas berri isnt.

I think most orange juice is vegan. I'm not too worried about additives unless it's 120. But I do remember reading a label once that it contained something unvegan, but can't remember what that was as was years ago.