Welcome to FindLaw’s Maryland Gambling & Lottery Laws Center. Maryland laws on gambling and lotteries regulate (and in some cases prohibit) activities such as casino gaming, horse racing, and dog racing. These laws also dictate the manner in which state lottery revenues are distributed. Horse racing in Maryland has a long and storied history dating back to the formation of the Maryland Jockey Club in 1743. There are specific statutes on the books as to what kind of racing or harness racing is legal. Click on the links below for Maryland-specific gambling and lotteries laws and where to find an attorney.