The legality of betting on sports online varies widely depending on where you are located. In the United States, for example, the landscape has changed significantly since the Supreme Court struck down the Professional and Amateur Sports Protection Act (PASPA) in 2018, which gave states the right to regulate sports betting. As of my knowledge cutoff in 2023, here’s a general overview:

**United States:**

– **Federal Level:** There is no federal law that outright bans sports betting across the country.

– **State Level:** Each state has the authority to regulate or prohibit sports betting within its borders. Some states have legalized sports betting both online and in-person, while others have only legalized it in-person, and a number of states have not legalized sports betting at all.

**International:**

– **Country-by-Country:** The legality of online sports betting varies greatly by country. Some countries have very open markets with numerous legal online betting operators, while others have strict laws against it. In some regions, online betting is only legal through state-run websites or monopolies.

To determine if you can legally bet on sports online, you should:

1. Check your local laws and regulations regarding online sports betting.

2. Ensure that any website or platform you use is legally operating within your jurisdiction.

3. Be aware of the age requirements; you must be of legal gambling age to participate.

It’s important to conduct thorough research or consult with a legal professional to understand the specific laws applicable to your situation. Always use reputable sources to stay updated on the latest legal developments in your area.