Hello David. This is the world wide web so the answer of course is yes and no. In some countries gambling is legal in others it’s not. Of course even in countries where it is illegal it still exists, especially for those who have a problem.
Why do you ask? If it’s because you want to gamble then take a look around the site, you would be in the wrong place as this site is here to help those for whom gambling is a problem and want to stop.
If you are among those who have a problem with gambling then you are in the right place. Rather than worry about gamblings legality though focus on your own actions and use the support you can get here to address the problem.
If you feel this is the right place for you then please continue posting and let us know a little about your own situation in relation to gambling.