While gambling at the casino or race track is legal in Wyoming, there are still laws prohibiting online casinos in the state. We take a closer look at gambling in Wyoming in our guide below. Online gambling is strictly prohibited in WY, which isn’t expected to change any time soon. Wyoming has never been a state in favor of gambling and only recently started legalizing casino gambling and the lottery. However, residents still have the following options for gambling in the Equality State: In Wyoming, most forms of gambling are still illegal.