A casino is an establishment for certain types of gambling. Casinos are usually built near or combined with hotels, resorts, restaurants, retail shops, and other tourist attractions. Some casinos may also host live entertainment events such as stand-up comedy shows and concerts.

The term casino may also refer to an individual who manages a casino. The casino industry is a major employer worldwide. In 2010, it contributed over $231 billion to the global economy. The United States is home to the most casinos, with a total of 2,147. The Bellagio in Las Vegas is renowned for its casino, with roulette, blackjack, baccarat and craps tables as well as 316 slot machines. It has been featured in several movies, including the James Bond films Goldeneye and Never Say Never Again.

Many casinos use technology to enhance security and monitor games. In some cases, this is done through the use of cameras; in others, it involves specialized chips with microcircuitry that interact with electronic systems at the table to reveal any deviation from expected results. Other methods include catwalks in the ceiling that allow surveillance personnel to look down through one-way glass on the gaming floor.

While gambling is legal in most countries, some jurisdictions have prohibited casinos entirely or restricted their operations. Some have even banned specific games, such as baccarat and pai gow poker. In other cases, the government regulates or taxes casino revenues. For example, in the United Kingdom, a percentage of all winnings from slot machines is retained by the casino.