A casino is a facility where people can play various games of chance for money or other rewards. Casinos offer a variety of table games, such as blackjack and roulette, and card games, such as poker and baccarat. Some casinos also feature entertainment such as shows and concerts.

Casinos are legal in many jurisdictions around the world and are regulated by government agencies. Some casinos are operated by corporations, while others are owned and run by private individuals. In the United States, casinos are regulated by state law and are often licensed by gaming control boards. A number of American Indian tribes operate casinos on their reservations, which are exempt from state laws that prohibit gambling.

In most games of chance, the casino has a long-term advantage over the players, known as the house edge. However, some games have a skill element, and players who possess sufficient skills can reduce or eliminate the house advantage, earning money for themselves in the process. These players are known as advantage players.

In the 21st century, casino culture has spread worldwide and is a major source of revenue for many countries, particularly in South East Asia where Macao and Hong Kong (both Special Administrative Regions of China) are prominent. In the United States, the largest concentration of casinos is in Las Vegas and Atlantic City. More recently, casino gambling has spread to other parts of the country as well, with 40 states now having legalized casinos.