Online gambling (also called Internet gambling) is usually the placing of bets on sports or casino type games over the Internet. Sometimes it is also used for telephone sports betting which means many advertise through the Internet. Real online gaming, however is when the betting, playing and collecting of money is done through the Internet. The nature of betting can range from Sports bets taken over the Internet to casino style games to lotteries, bingo or keno.

In many countries online gambling is legalized and online casinos are government licensed. For example, Antigua allows online gambling and has issued licenses to online casinos. Kahnawake, a Mohawk Territory in Canada, also licenses online casinos.