Yes, it is possible for a bank to close your account if they suspect you are using it for gambling activities. This is because gambling is still a sensitive topic in some countries and states, and banks want to avoid any potential legal issues. Some banks even have strict policies against gambling and specifically include clauses in their terms and conditions that allow them to terminate accounts that are associated with it. If you’re concerned about your bank account being closed, you can consider opening a separate account specifically for gambling transactions.