It depends on where the loss was claimed for federal income tax purposes. For instance, if you claim it as an itemized deduction on your federal tax return, then no, you can't claim it on your Indiana tax return. However, if you are a professional gambler and are allowed to claim gambling losses on your federal business schedule (probably federal Schedule C), then the losses are included in federal AGI, and you'll get full credit for it on the Indiana tax return.
If you have additional questions about your specific circumstances, please contact the Department for more information.