Most major credit card issuers don't permit gambling purchases with their credit cards, whether officially in their terms or unofficially by declining the transactions. Issuers that do allow gambling purchases often process the charge as a cash advance.
Gambling at the casino\n\n And what if you actually venture out to a casino location to try your luck? In this case, too, you won't be able to use your credit card to gamble directly. You would have to get a cash advance using the card, and then use that money to pursue your gambling activity.