If you are resident in Australia then you can get divorced in Australia.
The family court has 'do it yourself' divorce kits and a way you can apply online:
There are essentially two different processes for divorcing depending on whether your spouse will cooperate with the divorce or not.
Also be aware you must have separated for at least a year before you can get a divorce, although in some circumstances separation can occur even though you are still living in the same residence. The kits have information on this issue which you should read if you are uncertain.
Finally, divorce ends your marriage, so you will be free to remarry, but it does not deal with any property dispute or division you may need to make, nor finalise any parenting disputes about custody or access which may be occurring, as these involve separate family court procedures, and will generally require the involvement of a lawyer, whilst divorce itself can be achieved without the need to involve lawyers.
I trust the above assists.
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