The legality of 18-year-olds betting on sports varies by jurisdiction. In the United States, for example, the legal gambling age can differ from state to state. In some states, the legal age to bet on sports is 18, while in others it is 21. It’s important to check the specific laws of the state in question.

Internationally, the legal age for gambling also varies. In many countries, the legal age for sports betting is 18, but there are exceptions where it might be higher or lower.

To engage in sports betting legally, always ensure that you are of the legal age in your jurisdiction and that you are using a licensed and regulated sportsbook or betting platform.